A, D.

The exhibition, based on the context clue of digressed, was not as expected. Quarrels have a negative connotation; the opposite expectation would be positive. Touted and heralded both mean to promote and praise. Wangled (faked), insinuated (implied), and habituated (addicted to) all have negative connotations. Induced (brought about) might fit rather awkwardly but does not have a paired word to go with it.