Select the most appropriate option to substitute the underlined segment in the given sentence. If no substitution is required, select No improvement. The female ostrich guards the nest at night and the male guard it in the day. (a) guard it during the day (b) guarding it during day (c) guards it during the day (d) No improvement

Options

A. guards it during the day
B. guard it during the day
C. no improvement
D. guarding it during day

Answer

A