Question

which revision best reduces the wordiness in this sentence without changing its overall meaning? during recent research, genetic researchers have isolated the gene that determines the natural times a person sleeps and wakes. a. during recent research, genetic scientists who research have isolated the gene that determines the natural times a person sleeps and wakes. b. during recent research, genetic researchers have isolated the gene that determines times a person sleeps and wakes. c. genetic researchers recently isolated the gene that determines a persons natural sleep cycle. d. during research, genetic researchers have isolated the gene that determines the natural times a person sleeps and wakes.

Explanation:

The original sentence is word - y. Option C shortens "During recent research" to "recently", and "the natural times a person sleeps and wakes" to "a person's natural sleep cycle", reducing wordiness without changing meaning. Option A adds more words, Option B only removes "natural" which doesn't significantly reduce wordiness, and Option D only removes "recent" which is not enough.

Answer:

C. Genetic researchers recently isolated the gene that determines a person's natural sleep cycle.