Answer:
The English verb that is closest in meaning to deber in Spanish is should/must. Deber in Spanish as a verb is used to express obligations, give advice, or offer suggestions. For example:
Debes estudiar para el examen. (You should/must study for the exam.)
Deberías llamar a tu madre. (You should call your mother.)
Debo pagar la renta. (I must pay the rent.)
Deber can also be used to indicate probability or supposition, usually with the preposition de. In this case, deber de can be translated as must or must be. For example:
Debe de ser muy tarde. (It must be very late.)
Deben de estar cansados. (They must be tired.)
Debe de haber una explicación. (There must be an explanation.)
Therefore, the correct answer is should/must. I hope this helps!
Step-by-step explanation: