Answer:
![\boxed {\boxed {\sf D. \ van}}](https://img.qammunity.org/2021/formulas/spanish/college/3cjfdiqt1z9ifl9qkfa3yhuqxh4b8t60gr.png)
Step-by-step explanation:
We are given the sentence:
Pedro y Alicia ____ a la oficina de la directora.
We want to fill in the blank with the correct form of ir.
Pedro and Alicia are two people and can also be collectively referred to as "they". Therefore, we must use the form for ellos/ellas/ustedes which is van.
The sentence becomes:
Pedro y Alicia van a la oficina de la directora (Pedro and Alicia go to the principal's office)