NEED HELP FAST PLEASE

The williams twins are in your dental office for a routine checkup. mrs. williams informs you that they both eat the same quantity of sweets. however, jeanne eats her sweets all at once, whereas carol divides her sweets throughout the day. which of the twins is most likely to have tooth decay? why?

Laura is 25 years old, 65 inches tall, and weighs 145 pounds. her bmi classification would be : a) normal b) obese c)overweight d)underweight deepak is 35 years old, 71 inches tall, and weighs 178 pounds. his bmi classification would be : a) normal b) obese c) overweight d) underweight

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.