This is a test of commonsense. Complete the next sentence:

How to use a band aid
Assess whether a bandage is necessary.
Though you may think every wound needs a bandage, a bandage may actually be unhelpful or even harmful to certain types of wounds. In general, a cut or gash that is not very deep will benefit from a bandage, while other types of wounds will require different treatment approaches.
Keeping minor scratches, scrapes, and cuts clean might be sufficient, and you may be able to leave them uncovered. This will allow the wound to remain dry and begin to heal.