It seems like there might be a typographical error in your question regarding "verb Francis." If you're referring to "verb phrases," here's what they commonly have in common based on the options you provided:
B. They have a helping verb and a main verb.
This is the correct choice, as verb phrases often consist of a helping (or auxiliary) verb and a main verb, such as "is running," "has eaten," or "will go."
If you meant something else by "verb Francis," please clarify!