Two statements are given followed by conclusions numbered 1 and 2. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
1. Some mammals are animals.
2. All animals are birds.
Conclusions:
1. All birds are animals.
2. Some mammals are birds.

Correct option is D

Given:
1. Some mammals are animals.
2. All animals are birds.
Conclusions:

Conclusion 2: Some mammals are birds (True, some part of mammals are in birds)
Thus, option (d) fits.