Reason (R): Humboldt considered regions merely as tools to study the unity of diversity and unity of nature at a convenient scale.
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
Reason (R): Humboldt considered regions merely as tools to study the unity of diversity and unity of nature at a convenient scale.
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.