Answer:
b. First and second person plural.
Step-by-step explanation:
The stem often does not change for first and second person plural. That means that the verb remains in its form.
Singular:
1st person: I am /drive / speak
2nd person: You are /drive /speak
3rd person: She / He /It is /drives /speaks
Plural:
1st person: We are /drive /speak
2nd person: You are /drive /speak
3rd person: They are /drive /speak