When doing housework, what would be most useful to clean the patio?\nOptions:\n- mop\n- mobility\n- vacuuming\n- toothbrush\n- broom
Step-by-step reasoning:
broom
Broom means a long-handed brush of bristles or twigs, used for sweeping.

When doing housework, broom would be most useful to clean the patio.

.

So, the answer is broom