Eat healthy like example stay away from fried foods, lots sweets drink plenty of water and no smoking that can cause brain damanged to the unborn child
The most important is to avoid addictive substances: drugs, cigarettes and alcohol.
Then she must eat healthily and, as much as she can, remain active (exercise) while she still can - but only exercises that are appropriate for pregnant women. She should also avoid stressful situations.
Although this is a subjective question, the best option for probably be "D like the sun and the interlopers" in terms of which two stories seem to have similar general themes.
