Read the procedural text.

Improving Photo Composition

Composition is a term that refers to where objects are placed in relation to each other in a frame. Basically, it’s the skill of arranging items in a pleasing way. First, you’ll want to decide on a distance from your subject: the farther you are, the more of the surroundings will be included in your photo. Of course you can always crop later but don’t rely on this. Camera orientation and angle are also important. Experiment with tilting your phone or kneeling down to see how the composition changes in your viewfinder.

According to the text, what should a photographer do if he only wants the subject in the photo?

rearrange items in the background
tilt the phone so the lighting improves
kneel down to add more area to the viewfinder
get as close to the subject as possible