Question

multiview drawings: which of the following has the primary purpose of showing internal detail?
orthogonal view
sectional view
auxiliary view
multiview

Explanation:

A sectional view is created by cutting through an object to show its internal details. An orthogonal view shows multiple 2D views of an object (like top, front, side). An auxiliary view is used to show an inclined surface clearly. A multiview is a set of orthogonal views. So, the sectional view is specifically for internal details.

Answer:

Sectional view