Answer: The correct answer is : is the basis for making predictions.
Explanation: Hypothesis is an acceptable proposition that is formulated through the collection of information and data, although it is not confirmed, it is very useful to respond tentatively to a problem that is scientifically based.
Answer:Get professional screening before beginning a vigorous exercise program.
Explanation: Before starting vigorous exercise ,Joe should consult some professional related to the exercise. Joe being inactive and high blood pressure is not familiar with the physical activities or exercise, thus requires some professional advice to do the workout so that he can know about the the correct amount and time of vigorous exercise for him.