Final answer:
The sentence 'Los estudiantes está jugando tenis' is grammatically incorrect. The verb 'está' should be plural to agree with the noun 'estudiantes', so it should be 'están'.
Step-by-step explanation:
The sentence 'Los estudiantes está jugando tenis' is grammatically incorrect. The verb 'está' should be plural to agree with the noun 'estudiantes', so it should be 'están'. The correct sentence is 'Los estudiantes están jugando tenis'.
Learn more about Spanish sentence structure