Step 1: Understanding the Concept:
The sentence describes the formation of a company with a specific purpose.
Step 2: Detailed Explanation:
"Started" fits for a company's beginning. "Mandate" means an official order or commission to do something. A company can be started with a mandate to improve power distribution. "Established" works but "aim" is less formal/authoritative. "Promote" is the wrong verb form. "Acquired" means bought, not started. "Started, mandate" is best.
Step 3: Final Answer:
started, mandate