Which action demonstrates an abuser's behavior during the Tension Building Phase?

The action that demonstrates an abuser's behavior during the Tension Building Phase is isolating the victim. During this phase, an abuser often begins to exhibit controlling behaviors, which can include attempting to cut off the victim's relationships with friends, family, and support systems. This isolation serves multiple purposes for the abuser: it increases dependency on the abuser, diminishes the victim's sense of reality, and makes it more difficult for the victim to seek help or escape the situation.

The other actions listed do not align with behaviors typically seen in the Tension Building Phase. Seeking therapy or providing support would suggest a willingness to address issues and foster a healthier relationship, which contradicts the manipulative and controlling dynamics of this phase. Promoting cooperation also implies an approach that encourages mutual respect and collaboration, rather than the power imbalance that characterizes abusive relationships.