Here are some words translated from an artificial language.
I. peslligen means basketball court
II. ligenstrisi means courtroom
III. oltaganti means placement test

Which word could mean "guest room"?

Pesl means basketball; ligen means court; strisi means room; olta means placement; and ganti means test. Because strisimeans room, it must be present in the answer, so that rules out choice c. Choices a and d are incorrect because pesl means basketball and olta means placement. That leaves choice b as the only possible answer.