What are the different member-based community licenses?

Answer options:

A.Customer community & Customer Community Plus
B.Lightning External Apps Plus & Lightning External Apps Starter
C.Partner Community
D.All of the above

Correct Answer: D 
The different types of member-based community licenses are customer community, customer community plus, Partner community, lightning external apps plus, and lightning external apps starter. 
Reference:

https://help.salesforce.com/articleView?id=users_license_types_communities.htm&type=5