Which food is the richest source of folate?

Correct option is C

Folate (vitamin B9) is a water-soluble B vitamin essential for DNA synthesis, red blood cell formation, and fetal development.
Spinach is one of the richest natural sources of folate, providing a high amount per 100 grams when compared to most vegetables and animal products.
Other leafy greens like kale and fenugreek leaves also contain folate, but spinach tops the list due to its dense nutrient content.
Beetroot contains folate but in lower concentrations than spinach.
Eggs provide only moderate amounts of folate.
Drumstick (Moringa) leaves are nutritious but not the richest source of folate specifically.
Therefore, the correct answer is Option (c) – Spinach.