Final answer:
The a. Vitamin D and iron are the nutrients that typically fall below recommendations in children's intakes.
Step-by-step explanation:
Vitamin D and iron are essential nutrients with distinct roles in the body. Vitamin D supports calcium absorption, bone health, and immune function, often obtained through sunlight exposure and dietary sources. Iron is crucial for oxygen transport in red blood cells and metabolic processes, commonly found in foods like meat, beans, and leafy greens.
The nutrients that typically fall below recommendations in children's intakes are vitamin D and iron. Vitamin D is important for bone health and immune function, while iron is necessary for the production of red blood cells. Deficiencies in these nutrients can lead to health issues such as weak bones and anemia.