In each question below, four words printed in bold type are given. These are numbered (1), (2), (3) and (4). One of these words printed in bold might either be wrongly spelled or inappropriate in the context of the sentence. Find out the word that is inappropriate or wrongly spelled, if any. The number of word is your answer. If the words printed in bold are correctly spelled and appropriate in the context of the sentence then mark (5), i.e. 'All Correct', as your answer.

The books remained / (1) locked in the collar / (2) of the house for centuries, gathering dust / (3) and being devoured by insects. / (4)