Correct Answer:
Ustedes pondrán
__________________
Step-by-step explanation:
We use the Spanish simple future to talk about what will or shall happen. It is also used to talk about the possibility of what someone may or might be doing in the present. The verb poner translates into to put in English. The subject pronoun ustedes means you all, so the conjugation of the verb poner that matches ustedes is pondrán.