Assertion (A): Water boils at 100 degrees Celsius at sea level. Reason (R): The boiling point of water decreases with altitude.

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

Assertion (A): All successful leaders are charismatic. Reason (R): Charisma is a trait that can be developed over time.

D. A IS FALSE, BUT R IS TRUE.

Assertion (A): All mammals are warm-blooded animals. Reason (R): Warm-blooded animals can regulate their body temperature internally. Which of the following is correct?

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

Assertion (A): Reading improves vocabulary. Reason (R): A larger vocabulary enhances communication skills.

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

Assertion (A): All squares are rectangles. Reason (R): Rectangles have four sides. Which of the following is correct?

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