Final answer:
A passive-aggressive type person consistently finds excuses for their inaction, using indirect ways to express displeasure while avoiding direct confrontation.
Step-by-step explanation:
The type of person who can always find an excuse for his/her inaction, saying "I'll be happy to cooperate, just as soon as I finish..." is passive-aggressive. This behavior is a defense mechanism that allows individuals to avoid direct confrontation or responsibility by expressing their negative feelings indirectly through actions or non-action.
A passive-aggressive person may procrastinate, feign forgetfulness, or perform tasks inefficiently on purpose, all while maintaining a facade of cooperation or politeness. Such individuals use these tactics to express anger or frustration without open communication. In contrast, a competent person is usually proactive and efficient, a person in denial refuses to acknowledge the reality of a situation, and a neutral person tends to remain disengaged without taking sides.