D. Leslie ran to the door, greeting his mother with open arms.
The best type of organization for explaining step by step, how to get to your house from school is chronological. The correct answer is option D. Arranging the steps in a chronological order means putting it one after another based on the time it happened. A particular timeline or sequence of events is being observed.
The answer could actually be "climb" or "was climbing," but traditionally should be "climb." Hope this helps :)