Answer:
B. That you had
Explanation:
This is dependent on more, it makes no sense by itself so you need more information for it to make sense.
D. Mom should be capitalized because I believe it is a proper noun.
You can replace the word mom with a person's name. That is not always the case however. For example, I called my mom on my.... If you capitalized mom in this sentence and put a name then it wouldn't make sense because the word my was added. Hopefully this helps and makes sense. Good luck!!!
Answer:
You should add more context to your question if you wish for an answer. Though a good assistant to find which is correct on your own is Grammerly. It's a writing assistant. Just add it to your phone or PC.
Explanation: