Final answer:
High in folic acid are lentils and avocados, with lentils being among the top sources. Fish is nutritious but not a top source for folic acid.
Step-by-step explanation:
Foods that are identified as high in folic acid include leafy green vegetables, legumes like lentils, and organ meats. Although not listed among the highest sources, avocados also provide a decent amount of folic acid. Other beneficial foods for folic acid content are citrus fruits, nuts, beans, and fortified cereals. It is important to note that while fish is a great source of omega-3 fatty acids and protein for a pregnant client, it is not among the top options for folic acid. The recommendation to consume at least 400 µg/day of folate for women who might become pregnant is to prevent birth defects, such as neural tube defects and to ensure proper development of the fetus.