Active ownership refers to investors using their rights (voting, engagement, resolutions) to influence corporate behavior.

Why C (Proxy voting with an agenda) is correct:

Active owners use proxy voting to push ESG policies (e.g., climate risk disclosures, executive compensation reforms).

Example: BlackRock and Vanguard vote on shareholder resolutions to demand climate risk reporting.

Why not A or B?

A (Negative screening) is a passive strategy, not active ownership.

B (Disinvestment) is sometimes used but is not the main strategy of active ownership.