Answer to Question 1
B, D
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Manifestations of Klinefelter's syndrome include mild mental retardation, small testicles, infertility, long arms and legs, gynecomastia, scant facial and body hair, and decreased libido.
Answer to Question 2
D
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A probable sign of pregnancy is one that is objective and can be measured by an observer. A positive pregnancy test is a probable sign of pregnancy. Amenorrhea, enlargement and darkening of areola, and nausea and vomiting are presumptive signs because they could indicate another health condition.