Which food is known to be high in folic acid?

Folic acid, or vitamin B9, is crucial for DNA synthesis, repair, and methylation, and it is particularly important for pregnant women and individuals planning to conceive due to its role in preventing neural tube defects in developing fetuses. Among the options presented, oranges are well-known for their high folate content. They are a rich source of vitamin C as well, and while bananas contain some level of folate, they are not particularly recognized as a significant source. Chicken offers various nutrients but is not a notable source of folate, and rice generally contains lower levels of this vitamin unless it is fortified.

Thus, oranges would be the best choice for providing a substantial amount of folic acid, as they are frequently referenced in nutritional guidelines related to this essential vitamin.