I am not sure if its going to be right or wrong but I would pick either C or A
Answer:
the basic unit of a chemical element.
Explanation:
Thyriod gland is the right answer
They take over the photosynthetic process for the plant.
Stabilizing a LEG, once it is broken, by using 2 boards extending from the upper thigh to the bottom of the foot is a proper way to help an injured victim in the field.