Question

medium means:

• an intervening substance through which something is achieved
• the distance between things
• something left after other parts have been taken away
• government income due to taxation

Explanation:

To determine the meaning of "medium", we analyze each option:

• "an intervening substance through which something is achieved" matches the definition of "medium" (e.g., a medium for sound waves or communication).
• "the distance between things" refers to "interval" or "gap", not "medium".
• "something left after other parts have been taken away" is "remainder" or "residue", not "medium".
• "government income due to taxation" is "revenue" or "tax revenue", not "medium".

Answer:

A. an intervening substance through which something is achieved