单选题：根据以下资料，回答题：　　As a father to three young girls．I have been p

根据以下资料，回答题：
　　As a father to three young girls．I have been particularly struck over the past several months by the flurry of public activity related to childhood obesity．While the effoIrts are well- intentioned．it’s worrisome to watch the movement gain momentum when we still don’t really know whether what we’re doing is actually working—nor do we really know if there will be any downsides to the anti—obesity initiative．The most recent major move in the fight against childhood obesity came on Jan．25 when First Lady Michele Obama announced that school meal options were going to get a lot healthier．It is，undoubtedly，a good idea to make school lunches more nutritious，although some research suggests that by the time a child gets to school，his or her tastes for high calorie or otherwise unhealthy food is already in place and that changing lunch doesn’t make them eat healthier at home．In other words，school_based initiatives may be too little too late for those children who may be predisposed，whether through genetics or environment or both，towards obesity．
　　According to the Centers for Disease Control．17％of all children and adolescents in theU．S．are obese．Yet the majority of obesity programming，especially in our schools，is applied to the child and adolescent populations as a whole．Sure，promoting healthy eating，regardless of one’s weight or age，seems like a positive thing on the surface．But here’s the potential downside：We know kids and teens react differently than adults to external pressures like persistent messaging．Sometimes these pressures can translate into incredible waves of anxiety and fear．At the extreme，a healthy．weight youth could be pushed to monitor his weight more frequently or even begin an unsupervised diet——behaviors that might represent an impending eating disorder．
　　So the real question is what are children saying and how are they behaving in light of our anti‘obesity effort'?A nationally representative survey，conducted last September by theC．S．
Mott Children’s Hospital National Poll on Children’s Health。attempted to answer this question．The results，released in January，showed that 30％of parents of children age 6—14 report worrisome eating behaviors and physical activity in their children；17％of parents report that their children are worried about their weight：7％say their children have been made to feel bad at school about what or how much they were eating：and 3％of parents report their children had a sudden interest in vegetarianism．Certainly these data do not directly link the anti—obesity effort and eating disorders．They also do not offer any insight into whether obese children are actually losing weight．They do，however，serve as a reminder of how vulnerable these“worried”children already are to disordered eating and that everything we do，no matter how well—placed our intent，carries risk．
　　With that said，we shouldn’t stop promoting healthy eating habits in our children．And we shouldn’t necessarily downplay our anti．obesity efforts for fear of increasing the rate of childhood eating disorders．Instead，we should just be mindful——with their wonderful and special abilities as well as their unpredictabilities，children surely deserve an approach and awareness that is as well—thought out and balanced as the meals we’d like them to eat．
Michelle Obama’s proposal concerning school meals meets with some controversy
because_______． A．people doubt whether the meal provided by schools can meet nutritious standards
B．people doubt to which extent school meals can change the eating habit of children
C．people worry that parents may not supervise children when they are overeating at home
D．people believe that the predisposition to obesity is genetically and environmentally destined