<h2>
Explanation:</h2>
When you introduce a clause that describes a noun you previously mentioned in a sentence then you are talking about Relative Pronouns. So relative pronouns connect sentences or phrases. So we have four sets of relative pronouns in Spanish:
que
quien
el que
el/la/los/las que
el/la/los/las cual.
Some uses are the following:
- que - we can use it to refer a person/place
- quien - we can use it only to refer a person
It is "va" because the a in va represents he, she, and you (formal). He is going to the pool, so it is 'Mi padre va a la piscina con nosotros.'
It had an estimated population 1,042,641 in 2016 within the city's administrative limits and a population of 1,401,687 in the metropolitan area