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): The sun rises in the east. Reason (R): The earth rotates on its axis from west to east.

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

Assertion (A): Logic puzzles enhance critical thinking skills. Reason (R): Critical thinking skills are essential for problem-solving.

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

Assertion (A): All birds can fly. Reason (R): Birds have wings. Which of the following is correct?

D. A IS FALSE, BUT R IS TRUE.

Assertion (A): Reading improves vocabulary. Reason (R): A larger vocabulary enhances communication skills. Which of the following is correct?

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