Final answer:
The increased height of the person on the left suggests hyperfunctioning of the anterior pituitary, leading to an overproduction of Growth Hormone which can result in gigantism. The correct option is D.
Step-by-step explanation:
The person on the left with increased height likely exhibits signs related to the hyperfunctioning of the anterior pituitary. This is because the anterior pituitary gland is responsible for producing Growth Hormone (GH), which regulates growth and development.
When the anterior pituitary hyperfunctions, it means that there is an abnormally large amount of GH, which can cause gigantism in children or acromegaly in adults.
These disorders result in the excessive growth of bones, leading to increased height or bone enlargement in the face, hands, and feet.Hypersecretion of growth hormone is often caused by a tumor in the pituitary gland.
If this hypersecretion occurs in childhood and is left untreated, gigantism with very long arms and legs and abnormally tall stature by adulthood can result. Therefore, the correct answer to the student's question is D. Hyperfunctioning of the anterior pituitary.