Answer:
The correct answer is option <u>b. entrega.</u>
So, the phrase is: <em>La maestra de educación física </em><em><u>entrega</u></em><em> el examen.</em>
Explanation:
In Spanish, for the sentence to be coherent, <em>the subject and the verb have to agree in grammatical number and person.</em> In this case, the subject is The Physical Education Teacher ("<em>La maestra de educación física</em>"), which indicates a <em>singular third person (he/she), </em>so the correct answer is option <em>b. entrega</em>, for it is a conjugation of the Spanish verb "<em>entregar</em>" also in the singular third person (he/she), which matches the subject accurately.
Option <em>a. entregas</em> is also singular but the conjugation is for the second person (<em>you</em>), not the third (<em>she/he</em>). Option <em>d. entregan</em> is also in the third person <em>(he/she) </em>but in the plural form, not singular. And option <em>c. entregamos</em> is not in singular nor third person conjugation, but in the plural first person.