I`studying for my Health & Medical class and don understand how to answer this. Can you help me study?

Here is an abstract from the health behavior research literature. Which research study design appears to be described in this abstract? Once you identify the research study design, then define that design and provide an explanation of why you think it is that design.

Health behavior researchers assessed and compared sex/race differences on psychosocial factors related to physical activity among college students. The researchers surveyed 636 undergraduates at one point in time and determined the average frequency of physical activity was 3.5 days per week. While comparing subgroups, health/fitness was rated as the most important motive for exercise, followed by appearance and mental health. Enjoyment and the use of self-management strategies were most strongly associated with activity level. Only 40% were aware that adults should accumulate 30 minutes of moderate-intensity physical activity on most days of the week for health benefits. Health-related professionals should emphasize to college students the importance of learning self-management skills and enjoying the exercise experience.

McArthur, L.H. and Raedeke, T.D. (2009). Race and sex differences in college student physical activity correlates. Am J Health Behavior, 33(1):80-90.