Well an adverb helps make the verb (an action) take place
An adjective helps describe a noun
A prepositional phrase helps describe an event or location.
1). We can combine sentences with AN ADJECTITVE if they are talking about the same noun
2). We can combine sentences with AN ADVERB if they are talking about the same action
3). We can combine sentences with A PREPOSITIONAL PHRASE if they are talking about the same location
I would say that it is the third one.
False is a correct answer
The best thesis statement to answer the question provided regarding schools that border US/Mexico and immigration would be C. This is because it is the only selection that touches on both schools and immigration.