Assertion (A): All squares are rectangles. Reason (R): Rectangles have four sides of equal length.

B. BOTH A AND R ARE TRUE, BUT R IS NOT THE CORRECT EXPLANATION FOR A.

Assertion (A): All mammals are warm-blooded animals. Reason (R): Warm-blooded animals can maintain a constant body temperature regardless of the environment.

A. BOTH A AND R ARE TRUE, AND R IS THE CORRECT EXPLANATION FOR A.

Assertion (A): All birds can fly. Reason (R): Flying is a characteristic feature of birds.

D. A IS FALSE, BUT R IS TRUE.

Assertion (A): All birds can fly. Reason (R): Penguins are birds. Which of the following is correct?

D. A IS FALSE, BUT R IS TRUE.

Teacher is to Classroom as Doctor is to ?

B. HOSPITAL