In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.
Statements:
1. No plant is a fruit.
2. All biscuits are plants.
Conclusions:
I. Some plants are biscuits.
II. No biscuit is a fruit.

​Conclusions:
I. Some plants are biscuits. (Follow, beacuse All biscuits are plants. )
II. No biscuit is a fruit. (Follow, because no plant is a fruit, and since all biscuits are plants, they cannot be fruits.)

Thus, correct option is (c).