Final answer:
The Creative Services Department is responsible for the development and execution of advertisements in a full-service agency. This department focuses on the creative aspects of ad campaigns, from idea generation to visual design.
Step-by-step explanation:
The department responsible for the development and execution of advertisements in a full-service agency is the Creative Services Department. This department includes talented professionals who specialize in areas such as copywriting, graphic design, and creative direction. Their primary role is to conceive and produce effective advertising campaigns that resonate with the target audience. This involves generating ideas, creating storyboards, writing ad copy, and overseeing the visual aesthetics of the campaign. By contrast, other departments within the agency have different roles, such as the Media Planning Department, which determines the best platforms for the ad placement, and the Account Services Department, which acts as a liaison between the agency and its clients. The Production Department is typically in charge of bringing the creative vision to life through the actual production of the ad materials, whereas the Traffic Department manages the workflow of projects within the agency.