Which prefix means inside?

Which prefix means inside?

• A. Outer
• B. Across
• C. Upon
• D. Inside

Answer: (D)

The concept being tested is how prefixes describe location, specifically interior versus exterior. Inside directly conveys being within boundaries or the interior of something. That makes it the best fit for meaning “inside.” The other options point to being outside (outer), moving across (across), or being on top of (upon), which do not communicate an interior position. In medical/technical terms you might see endo- or intra- used for inside, but among these choices, inside is the clearest way to express the idea.

The concept being tested is how prefixes describe location, specifically interior versus exterior. Inside directly conveys being within boundaries or the interior of something. That makes it the best fit for meaning “inside.” The other options point to being outside (outer), moving across (across), or being on top of (upon), which do not communicate an interior position. In medical/technical terms you might see endo- or intra- used for inside, but among these choices, inside is the clearest way to express the idea.