Question

¿las personas o unos motores eléctricos abren y cierran las compuertas?
las personas
unos motores

Explanation:

In modern infrastructure, especially for systems like floodgates, sluice gates, or industrial valves, electric motors are commonly used to open and close gates (compuertas) for efficiency, automation, and in situations where manual operation (by people) may be impractical, dangerous, or less efficient. So the correct option is the one with "unos motores".

Answer:

unos motores (the option with "unos motores eléctricos" as the correct choice for who opens and closes the gates, with the radio button next to "unos motores" selected)