Three statements are given followed by two conclusions numbered I and II. You have to take the statements to be true, even if they seem to be at variance with commonly known facts, and decide which of the conclusions logically follow(s) from the statements.
Statements:
I. Some Picnics are Grasses.
II. All Grasses Are Rains.
III. Some Rains are Clouds.
Conclusions:
(I) Some Grasses are Clouds.
(II) All Picnics are Rains.

Statements:
I. Some Picnics are Grasses.
II. All Grasses Are Rains.
III. Some Rains are Clouds.

​Conclusion (I): Some Grasses are Clouds. (False)

From the Venn diagram, it is evident that there is no direct relation between grasses and clouds. So, no definite relation can be drawn. Thus, this conclusion does not follow.
Conclusion (II): All Picnics are Rains.(False)

From the Venn diagram, it is evident that the circles representing picnic and rain intersect an overlap each other. So, from this, it can be concluded that some picnics are rains. Thus, this conclusion does not follow.

So, neither conclusion (I) nor (II) follows.

Thus, the correct answer is (c).