Final answer:
Pregnant mothers should avoid travel near their due date, minimize the risk of infections, and refrain from exposure to harmful substances. They should ensure adequate nutrition for the fetus's growth.
Step-by-step explanation:
A pregnant mother should be advised to not travel and stay close to home as she nears her due date, generally after 36 weeks of pregnancy, and earlier if she has a high-risk pregnancy. It is crucial for pregnant women to avoid infections, particularly with pathogens like Listeria monocytogenes, as the immune system is suppressed during pregnancy, making them more vulnerable. In addition, exposure to certain substances can be detrimental to fetal development, especially in the early stages of pregnancy when major organs are forming. Pregnant mothers should also strive for a diet that is rich in essential nutrients such as folic acid, calcium, iron, and omega-3 fatty acids for the normal growth and development of the fetus.