I'm trying to decide between A and C, but I believe it is C.
To combine these sentences together to flow neatly and be grammatically correct you could say: Early airships such as zeppelins were filled with hydrogen, but today's blimps use helium instead. This is the correct answer out of your choices.
Your answer is: Early airships such as zeppelins were filled with hydrogen, but today's blimps use helium instead.
Have an amazing day and stay hopeful!
Answer:
Analyze an issue that you either care about or you know alot about. If you know alot about social justice you can write about BLM or AAPI stuff, if you care about the enviorment wite about pollution
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Answer:
I'm not sure which one but this may help
Academic discourse uses words and sentence structures that help a writer talk about complicated topics.
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