单选题 ______, the condor in Peru is threatened by the rapid encroachment of humans.
A. As isolated as its few remaining habitats may be.
B. As its few remaining isolated habitats may be.
C. May its few remaining habitats be as isolated.
D. Its few remaining habitats may be as isolated.

【正确答案】 A

【答案解析】[考点] 让步状语从句
[解析] as…as…may be，尽管……怎么样，符合语境。