Answer:
Pool
Explanation:
Given that pool is a term in business that is used to describe a form of the agreement made by the members of the pool with the fundamental purpose of retaining powerful control over prices. It involves producers of similar products that wish to standardize the product prizes.
Hence, in this case, a POOL is a group of businesses that make an informal agreement to cooperate in controlling a market or industry.
I Believe the answer is: Personal records
Personal record revers to a form of primary source which information is derived from the observation or the experiments that being done by the source writers themselves. In most cases, personal records are created by experts on the relevant fields.
The question is posted in Wrong subject category. Anyways, the solution is stated below:

The base on both sides are same i.e. 6. For the equation to be true, the exponents(powers) must also be the same. So this means
Therefore, answer to this question is x = 1
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Answer:
It's not E neither D or C. I'd say A or B.
When you think about it A. is better.... Sorry. You should read the article/book