Final answer:
The correct answer is 'a. van.' It means 'On Mondays, Jorge and his friends go to the shopping center.'
Step-by-step explanation:
The correct answer is a. van.
This sentence translates to "On Mondays, Jorge and his friends go to the shopping center."
In this case, the subject is plural (Jorge and his friends), so the correct form of the verb "to go" is also plural, which is "van" in Spanish.
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