In this page you can discover 41 synonyms, antonyms, idiomatic expressions, and related words for clue, like: evidence, sign, tip-off, hide, characteristic, clew, trace, intimation, proof, giveaway and telltale.
A. driving down the street, i saw the cat. Most of the other answers seem to entail that the cat was driving, or stated where *it* was, rather than the speaker.