Question

which force diagram shows a door being pulled open?

Explanation:

Pulling a door open requires a force directed towards the person pulling. An arrow pointing towards the door - puller represents a pull force. The first diagram with the arrow pointing towards the door - puller shows a pull force. The second diagram with the arrow pointing away from the door - puller represents a push force, and the third diagram with the arrow pointing downwards is not related to pulling the door open.

Answer:

The first force diagram (with the arrow pointing towards the door - puller)