What is the correct form of the verb "cerrar" in the following sentence? miguel y elena puerta.

Cierran is the conjugation of the verb cerrar for the third person plural in the simple present. The simple present tense is used to talk about habitual actions or routines. This tense is also used to describe things that happen now or in the near future. So Miguel y Elena can be replaced by the subject pronoun ellos (they). Finally:

Miguel y Elena cierran la puerta (Miguel and Elena close the door)

corras is the only one that is informal but doesn't follow the suffix rule. correr is the verb. corre is the formal verb form. corra would be used as the formal is corre ended with an a.

your best bet would be corras, it's the only one that is informal but is still wrong