Answer:
d
Explanation:
"Sometimes I do stupid things." matches with his frequently said statement: "I'm stupid."
Answer: It's called an Extension movement
Explanation:
One of the example is the joint in your elbow. If you straighten your arm, it will make the angle of the joint in your elbow to increase and create an extension movement
Another example is the joint in your hips
Depressed much, how are you
I'm not quite sure about that sorry...