Which sentence combines these two sentences and includes a relative clause?

the cashier rang up the manager's order. the cashier began working today.

the cashier who began working today rang up the manager's order.

the cashier rang up the manager's order because she began working today.

the cashier ringing up the manager's order just began working today.

the cashier rang up the manager's order, yet she began working today.

The cashier who began working today rang up the manager's order.

Explanation:

A relative clause is a clause that starts with a relative pronoun.Relative pronouns are who, that, which, whose, when and where. In most of the cases, we use them to provide additional information about a noun that precedes them.The only sentence that contains a relative clause is The cashier who began working today rang up the manager's order.In this case, pronoun 'who' is used to define the noun 'cashier'. It also connects the two sentences into one.

B. Deductive

Explanation:

I just took the test & this was the answer :)