A comma is used to show a short pause in a sentence
Answer:
The door
Explanation:
While many might say the fridge needs to be opened first to prepare breakfast, note that it does not say that the parents are in the house, and therefore they would need to be let in. Hence the answer of what to open first would be "the door".
5. C. Process
6. A. Process
7. A. Description
Ponder means "to think about (something) carefully," which is most similar to D. Reflect. Ponder basically means, "to reflect on" something.