It means that scientists will no longer have to wait to develop diseases
The first sentence would be correct. B and D are comma splices, and C is incorrect. Hope this helps!
This question is incomplete; here´s the complete question.
Watch the video "How Flu Viruses Attack", by National Geographic.
How did the National Geographic video use media to aid understanding of
how flu viruses work in the body?
A. Photographs illustrated a farm yard where animals got sick.
B. There were graphs showing statistics of flu cases by year.
C. There was a picture of a plane taking off with a sick child on
board.
D. There were colorful graphics of flu viruses replicating.
Answer: D. There were colorful graphics of flu viruses replicating.
Explanation:
In this video, we can see colorful graphic animations that provide a better understanding of how a flu virus strikes the body, mutates, and can even get to be contagious.
The images show that a flu virus has a protein spike on the surface that allows it to break into the human cell’s nucleus, and then clone new viruses that take over other cells.
I think the answer would be, "Our frugal lifestyle included clipping coupons and waiting for sales before shopping.", because Frugal basically means sparing with regard to money.