6
Q:
A) Both A and R are true and R is the correct explanation of A. | B) Both A and R are true but R is NOT the correct explanation of A. |
C) A is true but R is false. | D) A is false but R is true. |
Answer: A) Both A and R are true and R is the correct explanation of A.
Explanation:
Explanation:
Iron expands in summer. So, gaps are left between rails to allow for expansion.