B. A principal (you need to use the formal)
Do you want my mobile brother?
Mobile can be a way to refer to a cell phone
Las siete y doce i hope this helps
'La cancha' es un mercado muy grande en Cochabamba.
"<u>La cancha</u>" is a very large market in Cochabamba, Bolivia. It is called "<u>La cancha</u>" to a large area of commercial zones. So it's option B.
<h3><em><u>MissSpanish</u></em></h3>
Mark down whenever an assignment or project is due on your calendar. And I would listen to Spanish conversations on Youtube to get a better understanding of the language.