A common requirement of a PhD across different schools and countries is: D. a dissertation.
<h3>What is PhD?</h3>
PhD is an acronym for Doctor of Philosophy and it can be defined as the highest level of degree that is awarded to a graduate, especially after the completion of a masters degree (MSc.) in a particular course of study.
As a general rule, a dissertation is a common requirement from all students of a Doctor of Philosophy (PhD) across different schools and countries.
Read more on dissertation here: brainly.com/question/2094985
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Monetary policy I think I’m sorry if I’m wrong
Answer: 30%
Explanation: If the probability you'll win is 70% and percentages can only reach up until 100% you subtract 70 from 100 and get 30. 100%-70%=30%
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