Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements.
Statements:
1. All lions are tigers.
2. Some tigers are leopard.
3. No leopard is giraffe.
Conclusions:
I. Some leopards are lions.
II. Some giraffe can be tigers.

​Statements:
1. All lions are tigers.
2. Some tigers are leopard.
3. No leopard is giraffe.
From the given statements possible Venn diagram will be.

​Conclusions:

I. Some leopards are lions. (False, there is no direct or indirect relation between leopards and lions).
II. Some giraffe can be tigers. (True, there is no direct or indirect relation between giraffe and tigers. But it's possible that some giraffes could be tigers).

So, Only conclusion II follows.

Thus, correct option is (d).