Step 1: Understand the store hierarchy:
A large store has several levels of managers. The General Manager heads the whole store. Group Managers look after several departments. Department Managers run one department.
Step 2: Match the duties:
Executing merchandising plans, achieving sales goals and supervising training are day to day tasks inside one department.
The person who does these is the Department Manager.
Step 3: Why the other options are wrong:
(A) Group Manager: this role plans and coordinates a group of departments, not one department's daily work.
(B) General Manager: this role controls the entire store and sets overall policy.
(D) Sales Demonstrator: this person shows how a product works to customers. This person does not manage plans or training.
Final Answer:
The in-store Department Manager carries out these duties. The answer is option (C).