Final answer:
The correct verb is "dirá" in the future tense.
Step-by-step explanation:
The correct answer is C. dirá.
In the sentence, the verb phrase "nos lo que tenemos que traer" requires the future tense of the verb decir, which means to say.
Therefore, the sentence should be written as La profesora nos dirá lo que tenemos que traer, which translates to "The teacher will tell us what we have to bring."
Learn more about Spanish verbs