B. Ellos son.
Explanation:
Ellos translates into a masculine or mixed-gendered “They”. Son just means are.
Nosotros is out because it’s like a “we” and same goes for vosotros.
Es means is more than it means are.
Estos means these.
La palabra que debes añadir es "pueda"
Answer:
The first singer in the program is Shakira.
Explanation:
Your answer would be cuántos hermanos tienes?