boosts the immune system, regulates hormones, and produces hemoglobin
benefits strong bones and regulates heartbeat and blood clotting
provides the body with glucose and, thereby, long-lasting energy
regulates water balance in the body and tissues, and encourages muscle growth
The answer is what I'm assuming to be the second one, I've done research and iron affects the bone metabolism which in turn benefits strong bones. Treatment for iron deficiency can prevent blood clots. Over all the answer is the second list.