Question

5. Twenty volunteers with high cholesterol were selected for a trial to determine

whether a new diet reduces cholesterol. The volunteers were given a low-carb,

low-calorie diet. After 8 weeks of the diet, the average cholesterol of the

volunteers dropped a significant amount. This study is an example of

(A) A controlled experiment.

(B) An uncontrolled experiment.

(C) A double blind experiment.

Ablocked design experiment.

Answer 1

Answer:

(B) An uncontrolled experiment.

Step-by-step explanation:

In the case of an uncontrolled experiment here all participants are provided the similar treatment and there should be no comparison oppose to any group i.e. controlled

Since in the given situation, there are similar diets are provided to 20 volunteers and it can be that the  cholesterol level is decreased after particular time period,

Hence, it is an uncontrolled experiment.

Thus, option B is correct.