The general purpose of a proposal is to

A) showcase your writing skills.
B) adorn your company's Facebook page.
C) educate readers about your company.
D) persuade readers to do something.
E) provide results from in-house focus groups.

General Purpose

The broad objective or aim of an action, speech, or piece of writing, not limited to specific details.

Proposal

A formal offer or plan submitted for consideration or acceptance, often detailing a project or initiative.

Persuade

To induce someone to do something through reasoning or argument.