Question

what does a thesis statement do?
a. summarizes everything
b. asks a question
c. lists examples
d. states the main idea

Explanation:

A thesis statement is a concise, declarative sentence that communicates the core argument or central focus of an academic paper or essay. It does not summarize the entire work (that is a conclusion's role), ask a question, or list supporting examples. Its primary function is to state the main idea that the rest of the work will explore and support.

Answer:

d. States the main idea