Question

a thesis statement is -
○ the controlling idea of an essay
○ the main idea from a paragraph
○ the attention - getter of an essay
○ the question from a prompt

Explanation:

A thesis statement is the central, controlling idea that guides an essay, outlining its main argument or purpose. The main idea of a paragraph is a topic sentence, an attention - getter is for engaging readers (e.g., a hook), and a thesis isn't a prompt's question. So the correct description is "the controlling idea of an essay".

Answer:

the controlling idea of an essay