Answer:
C. It uses imperfect coordinating structure
Explanation:
Here is just one way to fix the sentence:
The family wants to vacuum, dust, and straighten up the whole house.
The adjective clause is similar to the simple adjective in that that it describes, or refers to, or modifies the noun which precedes it. Having that in mind, the adjective clause in this sentence is 'you saw at the coffee shop', because it modifies the noun 'the man'.
Answer: 1. tell someone something quicker
2. abbreviations like “lol” or “ttyl”
3. use abbreviations
4. save time and send messages faster.
Explanation: in the answer lol