Susan wanted to carry out a study to find out if aerobic exercise caused more weight loss than just walking. She instructed one group of study participants to do aerobic exercise for 20 minutes, 4 days a week. A second group was instructed to walk for 20 minutes a day, 4 days a week. Group membership was determined by a coin toss--heads, aerobic exercise; tails, walking. Susan weighed each participant before her study started and again three months into the study and then compared the average weights of the two groups. Susan's study is an example of research.

the exercise research

Explanation:

The exercise research -

As the name suggests ,

It refers to the type of research method , where any physical activity is required to conclude about the topic , is referred to as the exercise research .

The method require physical activity , which acts as an experiment in order to draw any conclusion and brief information about the topic of concern .

Hence , from the given scenario of the question ,

The correct answer is the exercise research .

his wha5

answer would be b, a tariffs main purpose is to protect domestic production and jobs.