Answer:
The sentence which contains a demonstrative pronoun is the following one:
D.These come from California.
Explanation:
Demonstrative pronouns are used to indicate things or people we are talking about. Those things and people can be near or distant. Therefore, by saying "These come from California", one is clearly pointing at things or people in particular and referring to them.
Examples:
This girl is a new student. (singular- near)
That girl is a new student. (singular- distant)
These girls are new students. (plural- near)
Those girls are new students. (plural- distant)
