What we really concern is those orphans can recover from the earthquake psychologically.A

问题补充：

What we really concern is those orphans can recover from the earthquake psychologically.

A. that

B. if

C. why

D. whether

答案：

A. that

B. if

C. why

(答案→)D. whether

解析：句意：我们真正关心的是那些孤儿能否在心理上从地震（的伤害）中恢复过来。表语从句中表示是否，用whether不用if. 只用whether不用if的情况：1.主语从句放在句首 2. 引导表语从句 3.介词后，不定式前 4. 与or或or not连用。5. discuss后。故D正确。