During pregnancy, the appearance of hair on the head coincides with the

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formation of eye-lashes and separation of eye-lids

development of heart and external genital organs

development of limbs and digits

first movements of the foetus

answer is A.

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Detailed Solution

Both the first movements of the foetus and appearance of hair on the head are usually observed during the fifth month of the pregnancy.

Development of heart occurs after the first month. The external genital organs form by the end of 12 weeks (first trimester).

Formation of eye-lashes and separation of eye-lids occurs by the end of about 24 weeks (end of second trimester).

The foetus develops limbs and digits, by the end of the second month of pregnancy.

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