In Scottish folklore, a brownie is a helpful household fairy said to perform chores at night. It traditionally works while the household sleeps, carrying out domestic or farm tasks in return for respect and a small offering.
Brownies were commonly associated with the hearth and might be offered milk, cream, porridge, or cake. Folklore describes them as solitary, shy, and easily offended. A family that mocked one, watched it work, or gave it clothing could cause it to leave—and its departure was sometimes said to take the household's prosperity with it.
Brownies are related to other British household spirits but are not identical to every goblin or fairy in the answer choices. A boggart is more often troublesome, while a púca is an Irish shapeshifting spirit. The Scottish Gaelic terms brùnaidh and gruagach are also associated with brownie traditions, though regional usage varies.