The best way to complete the sentence is "As an arbitrator, he felt that being methodical and requiring corroborating evidence from all participants..."
To complete this sentence, we must have some knowledge of expressions typically used in the law field. The sentence is about an arbitrator who requires a certain type of evidence.
First, we will need a word that has a positive connotation to talk about the arbitrator, since this job requires a high degree of ethics and efficiency. Therefore, we can eliminate options C and D.
Now, to talk about the evidence, we need to find a positive adjective that forms an expression that actually exists in law. Thus, we can eliminate options A and B.
The best option is letter D. It is good for an arbitrator to be methodical, which would mean he or she is doing everything properly. The expression "corroborating evidence" is used to refer to evidence that confirms or backs up other pieces of evidence.
With that in mind, we can conclude that the correct sentence would be:
The complete question with the missing answer choices is the following:
As an arbitrator, he felt that being __________ and requiring __________ evidence from all participants was proper procedure in dealing with conflicting accounts.
Learn more about corroborating evidence here:
https://brainly.com/question/28216343
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