Answer:
hi i dont know because im also grade 6
I would think D. using an online bookmark. That is to save or tag websites for later viewing.
The predicate nominative is B. fish because it follows the word 'is' and can be switched with the subject (a seahorse IS a fish)
I can't really help you with the first one (because I can't hear the audio), but I think the second one is B. "Take Care"