Insects are composed of 65-80% what?

Insects are primarily composed of protein, making it the correct choice. The protein content in insects is significant, often ranging from 30% to over 50% by dry weight. This high protein concentration is part of what makes insects a valuable food source, especially in diets where traditional protein sources may be limited.

In addition to protein, insects also contain fats, carbohydrates, vitamins, and minerals, but none of these components match the substantial protein content found in their body structure. This high protein ratio reflects their efficiency as a food source, as they can provide essential amino acids and other nutrients with lower resource inputs compared to conventional livestock.