Based on the clue 'a flash one of these can be caused by persistent h...', what is the answer?

Based on the clue 'a flan can be a dessert or a flat one of these tha...', what is the answer? Based on the clue 'a flapper was a girl a flivver one of these', what is the answer? Based on the clue 'a flash of inspiration or what an electroencephalo...', what is the answer? Based on the clue 'a flash of light or a knack for doing something', what is the answer? Based on the clue 'a flashing red light means you do this functions ...', what is the answer? Based on the clue 'a flask for carrying water', what is the answer? Based on the clue 'a flat boneless piece of veal for example', what is the answer? Based on the clue 'a flat bottomed glass with no handle it sounds lik...', what is the answer?