During the adolescent growth spurt, teenagers need A: less calcium
B: less iron
C: more energy
D: all of the above
(Food)

I think C

Explanation:

All teens need more energy, less calcium means your heart wont be as strongs so it isnt A, B Without enough iron, your body can't produce enough of a substance in red blood cells that enables them to carry oxygen so it isnt B, and it isnt D so the right answer will be C