Final answer:
Identifying and correcting an error in sentence construction in the given sentences.
Explanation:
The sentence containing an error in its construction that needs revision is sentence 1. The issue lies in the lack of a clear subject in the sentence. The clause 'Walking dogs, cleaning kennels, hand-feeding newborn kittens, and supporting the adoption process' is a participial phrase, and it is not connected to a clear subject, making the sentence structurally incorrect.
In contrast, sentence 2 presents a clear subject ('Working at the animal shelter') and is grammatically correct. Sentence 3 also maintains subject-verb agreement and clarity. Similarly, sentence 4 is well-constructed and does not contain errors in its construction.
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