Question

i discharged my cab, and from across the street watched williams incomprehensible behavior. source: short stories of various types in this sentence, incomprehensible means: incapable of being explained or accounted for marked by tact in dealing with sensitive matters or people characterized by courtesy and gracious good manners easily understood or seen through

Explanation:

The word "incomprehensible" means not able to be understood. The first option "incapable of being explained or accounted for" is closest in meaning as something that is not understandable may also be hard to explain. The other options about tact, courtesy, and being easily - understood are not related to the meaning of "incomprehensible".

Answer:

A. incapable of being explained or accounted for