The role of campaign manager is to oversee a campaign organization. Option D is correct.
The campaign manager is responsible for overseeing all aspects of the campaign such as daily operations, the hiring and management of staff, the coordination and implementation of the fundraising operations and ongoing coordination with the candidate. Campaign managers also creates and manages the campaign budget.
The should be characterized by a great organizational skills, and by having good interpersonal skills . Besides, they should not be afraid of raising money.