Good lighting in factories leads to greater comfort, higher ______ and productivity.

A．If his superior is involved, he should be the third party of it.
B．He should punish the person who is responsible for the conflict.
C．He might consider whether to interfere with the matter or not.
D．He would not consider his relationship with the two adversaries.

A．If the manager happens to be involved in the conflict, he had better compromise.
B．There are many factors to consider before trying to settle a conflict.
C．The external conditions must be taken into account.
D．Sometimes we should deal with the involved parties in a friendly way.