The correct answer is D) carryover in the first-stage. A high reading at the salinity cell in the loop seal between the two stages of a flash-type evaporator would indicate carryover of brine from the first-stage into the second-stage. This carryover can occur if the level control or brine removal in the first-stage is not functioning properly, allowing brine to be carried over with the vapor into the second-stage. The other options are incorrect because: A) A faulty brine overboard pump would not affect the salinity reading in the loop seal. B) Chill shocking is a method to remove scale, not an indication of the issue described. C) Leakage at the second-stage condenser would not cause a high salinity reading in the loop seal.