1.  Statement : In a recent survey report, it has been stated that those who undertake physical exercise for at least half an hour a day are less prone to have any heart ailments.

Conclusions : 

I. Moderate level of physical exercise is necessary for leading a healthy life.
II. All people who do desk-bound jobs definitely suffer from heart ailments.

A. Only conclusion I follows.
B. Only conclusion II follows.
C. Either I or II follows.
D. Neither I nor II follows.
E. Both I and II follows.

Answer: Option A

Explanation:

The statement mentioned that chances of heart ailments are greatly reduced by a regular half-hour exercise. So, I follows. However, it talks of only reducing the probability which does not mean that person involved in sedentary jobs shall definitely suffer from heart ailments. So, II does not follow.