Kevin knows that he needs to start exercising to lose weight. he has contacted several fitness centers in his locality. according to the stages of change model, kevin is at the stage.

Kevin is at the preparation/determination stages.
People in preparation/determination are already decided to change by doing a certain action, but still haven't done it because they're currently making final adjustment for the change.
Other Example: people who decided to quit their jobs and already had several other jobs line up.

The correct answer is "the protesters were attacked by chinese troops and many were killed or arrested."