B: He's an architect.
8. A: does Natalie's nephew do?
A) How B) Whom C) When D) What​

D) What

A: What does Natalie's nephew do?

B: He's an architect.

Объяснение:

Я живу в Канаде уже 5 лет:)

The correct answer is Option D.
WHAT is used to ask about some thing or activity. In the given sentence, the speaker wants to know about Natalie's nephew's activity.
Hence, WHAT is the appropriate word that can is to be used.
The remaining options are incorrect because:
Option A: HOW is used to determine the manner of something.
Option B: WHY is used to determine the reason of something.
Option C: WHEN is used to determine time period.
Hence, Option D is the correct answer.