Answer:
d. one or more people depending upon the requirements of the proposal.
Explanation:
A proposal can be defined as a plan or suggestion which are formally written to present an idea to an individual or organization for consideration.
Proposal preparation is completed by one or more people depending upon the requirements of the proposal.
In order to prepare a good proposal, it is very important to make it as formal as possible. The content of the proposal is strictly based on what the initiators wants to do or achieve, as well as how they wish to achieve.
<em>Hence, a proposal is only prepared with regard to the requirements of the proposal and the number of people involved. Proposals are usually used by project managers or contractors seeking for a contract</em>.