Which woman is at the greatest risk of bearing a baby with down syndrome? "gemma, age 15, who lives in a rural community" "melina, age 24, who lives with a smoker" "ursula, age 33, who was exposed to electromagnetic waves" "kay, age 42, who lives in an urban area "

The correct answer is: Kay, age 42, who lives in an urban area

Explanation:

General knowledge and now scientific studies have confirmed that older women not only find it more difficult to get pregnant but the giving birth at an older age might lead to birth defects in a newborn.

As woman grow older their eggs become less fertile which makes it difficult to conceive. However, the hormonal changes in the body make it difficult for normal pregnancies to occur and there are higher chances of a child being born with down syndrome and similar diseases.