the answer is d, hope this helps
False,
Use the adjective abstract for something that is not a material object or is general and not based on specific examples. Abstract is from a Latin word meaning "pulled away, detached," and the basic idea is of something detached from physical, or concrete, reality.
Business or things that have to do with trading in business
The answer should be D because it is stating something happy/nice at the beginning, but then it goes into the downside of the experiments. Which means you need a negative transition word
