A proposal is a plan, idea, or suggestion, often formal or written, that is presented for consideration and decision-making. It can take various forms, such as a written offer from a seller to a prospective sponsor in a business context, a plan of action, a request for funding, or a suggestion of an idea. Proposals are used in different settings, including business, research, and personal relationships. They are essential in the complex sales process, where they put the buyers requirements in a context that favors the sellers products and services, and educate the buyer about the sellers capability to satisfy their needs).