The most reasonable answer is A.start paying attention to her diet so she won't gain weight later and walk once a day
The theory, methods, and practice of testing a hypothesis by comparing it with the null hypothesis. The null hypothesis is only rejected if its probability falls below a predetermined significance level, in which case the hypothesis being tested is said to have that level of significance.
Mass times acceleration is force. F=Ma
An argument is defined as 2 or more people disagreeing about something
I am not sure, but I believe your answer is A. 5-15