Answer:
C. Sí, unos alumnos van a la escuela a pie.
Step-by-step explanation:
To complete this exercise, you have to select the best answer for the question given. The correct answer is ''c'' because it is the only one that fits the question. The other answers do not make sense in the context of the question.
Answer ''a'' is a negative answer about the time the students arrive at school. Answer ''b'' is about the teacher and its lesson. Answer ''d'' only says that students arrive at school but it does not clarify how. And, finally, answer ''e'' is about students being in class.