Discover the Magical Charms in Harry Potter Series!

Explanation:

The correct answer is 3) Disillusionment Charm. The Disillusionment Charm is a spell used in the Harry Potter series to make an object or person appear partially or completely invisible, in order to blend into the surroundings and become undetectable. It is used for concealment and camouflage purposes, and it can be undone by certain counter-spells.