Which of the following changes takes place during the first trimester of a woman's pregnancy?
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A. The fetus begins rhythmic breathing movements.
B. The mother feels the fetus move for the first time.
C. The fetus develops hands and feet.
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D. The fetus develops toenails, lips, and eyelashes.

The correct answer is - C. The fetus develops hands and feet.

Explanation:

The fetus begins rhythmic breathing during the second trimester around 26 weeks. It is controlled by the CNS system of the fetus. The mother feels the fetus move around 16 and 24 weeks of pregnancy normally around the 20th week.

The fetus develops toenails, lips, and eyelashes between the 22nd and 26th week from ectoderm. During the initial 5 to 7 weeks hands and legs are started to form as buds and then develop fully.

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explanation:

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.