Question

1. you all (formal)

ellos
nosotros
vosotros
uds.

Explanation:

To solve this, we analyze each option:

• "ellos" means "they" (masculine, third - person plural).
• "nosotros" means "we".
• "vosotros" means "you all" but is informal (used in Spain).
• "Uds." (short for "Ustedes") means "you all" in a formal context (used in most Spanish - speaking regions outside of Spain). Since the question asks for "you all (formal)", "Uds." is the correct choice.

Answer:

D. Uds.