To solve this matching question, we need to correctly identify what each item in List I represents and match it with its corresponding description in List II:

• GLUT-4 is a glucose transporter protein that allows glucose to be absorbed into cells when insulin is present. Hence, it should be matched with "Enables glucose transport into cells."
• Insulin is a hormone produced by the pancreas that helps regulate blood glucose levels by facilitating the uptake of glucose into tissues. It should be matched with "Hormone."
• Trypsin is an enzyme that aids in the digestion of proteins in the digestive system. It should be matched with "Enzyme."
• Collagen is a primary structural protein that forms connective tissues throughout the body, including the extracellular matrix. It should be matched with "Intercellular ground substance."

Here's how we match each term with the correct description from List II:

A-IV, B-I, C-II, D-III

This corresponds to:

• A (GLUT-4) - IV (Enables glucose transport into cells)
• B (Insulin) - I (Hormone)
• C (Trypsin) - II (Enzyme)
• D (Collagen) - III (Intercellular ground substance)

Therefore, the answer is Option A:

A-IV, B-I, C-II, D-III