3, because compassionate and generous are both adjectives
Answer:
1. If it rains, we won't go to the beach.
2. Ms. Smith, who lives next door, came to borrow some sugar.
3. You must be really proud of your mother, aren't you?
Explanation:
1. The use of the comma is obligatory after introductory clauses or phrases. All the markers for the introductory clauses are always followed by a comma (if, since, while, after, because, etc.).
2. The use of the comma to offset a clause in the middle of a complete sentence is mandatory, as those clauses provide additional information to the complete sentence.
3. The use of comma to offset a clause at the end of a sentence is mandatory, in order to separate contrasting elements or to denote a pause during the speech.
Answer:
To make phones even better, we could add holograms. Holograms that let the person you facetime stand right in front of you. So instead of having to fly around the country to see somebody, you can have them right in front of you with a hologram.
Explanation: