Which sentence shows an appropriate and correctly punctuated relationship between clauses?
a) the students are studying because, they have a test tomorrow.
b) the students are studying, because, they have a test tomorrow.
c) the students are studying because they have a test tomorrow.
d) the students are studying; because they have a test tomorrow.
provide explanation with answer, if possible.

The sentence that shows an appropiate and correctly punctuated relationship between clauses is the following:

C, The students are studying because they have a test tomorrow.

The punctuation should not break the relationship between a conjunction and the clause it introduces. Thus, A and B display an incorrect punctuation as they place a comma between because and the clause "they have a test tomorrow".

Furthermore, punctuation marks should not separate the primary clause, in this case "The students are studying", and the conjuction "because", which is the error on both B and D. One can use semicolons with other conjuctions, like adversative conjunctions but not with the subordinating conjunction "because".

is this the question?

you didn't provide the passage.

explanation:

seeing as this is your first question on i can see why you may have not known that you need to provide the passage.

without the passage, or even the name of the passage, we can not read the passage, therefore we can not determine when or how the pacing effects the tone.

however, you can either repost this question (providing the passage this time)

or you can comment below what the passage is, and i'll you to the best of my ability!