Which seed is the highest source of plant-based calcium?
Detailed Solution:
Correct Answer: Sesame seeds
Sesame seeds are one of the richest plant-based sources of calcium. Just 1 tablespoon of sesame seeds contains about 88 mg of calcium, and tahini (sesame seed paste) is also a strong source. While other seeds like sunflower, pumpkin, and flax are nutritious, they contain lower levels of calcium compared to sesame.