<span>The words used to connect ideas in a research paper are known as topics.</span>
Jane Austen was inspired by many of the artists of her day, one of which was Samuel Johnson who was known for his witty prose. However, most of her inspiration came from what she observed in the world around her, specifically, her own family and life.
Now, as I watched the bus driver set my luggage on the airport sidewalk, I realized that my
frustration had only just begun
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!