Which of the following is NOT a way to remove ineffective management of a publicly traded firm?

Activist investors can pressure the board of directors to remove management and$/$or launch a proxy fight

The Board of Directors can directly replace management.

Shareholders can vote for new directors that will replace management.

The SEC $($Securities and Exchange Commission$)$ can remove management.

Another company can purchase $($takeover$)$ the underperforming company and replace management.