A foreigner's first impression of the U.S. is likely to be ________ everyone is in a hurry ---- often under pressure.

   a. what                         b. that            c. which              d. one in which

A foreigner's first impression of the U.S. is likely to be ________ everyone is in a hurry ---- often under pressure.

   a. what                         b. that            c. which              d. one in which