When aerobic exercise is combined with calisthenics as well as warm-up and cooldown stretches, it
A. is much more competitive than other sports.
B. has a high risk of injury.
C. doesn't strengthen or condition the heart.
D. provides a complete workout.
Is the correct answer D
Since the first three answers are obviously wrong, it must be D.
To determine the correct answer, let's break down the question and options one by one:
The question states, "When aerobic exercise is combined with calisthenics as well as warm-up and cooldown stretches..." This indicates that we are looking at a scenario in which aerobic exercise is combined with calisthenics and warm-up/cooldown stretches.
Option A suggests that this combination is "much more competitive than other sports." However, the question does not provide any information about comparing this combination to other sports in terms of competitiveness. Thus, option A is not a valid answer.
Option B states that this combination "has a high risk of injury." While it is true that any activity has the potential for injury if not done correctly, the given information does not provide any evidence to suggest that this combination inherently poses a high risk of injury. Therefore, option B is not the correct answer.
Option C claims that this combination "doesn't strengthen or condition the heart." However, aerobic exercise, as the name suggests, is specifically designed to improve cardiovascular fitness and strengthen the heart. Therefore, option C is not correct.
Option D states that this combination "provides a complete workout." Given that aerobic exercise, calisthenics, warm-up, and cooldown stretches all contribute to different aspects of fitness, it can be inferred that the combined approach would indeed provide a well-rounded and comprehensive workout. Thus, option D is correct.
Therefore, the correct answer is D - "provides a complete workout."