One of the primary benefits of a survey is that they:
- <u>B. allow efficient gathering of unobservable phenomena</u>
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A survey is a system of qualitative research which is used to gather opinions of people about a particular subject or issue.
As a result of this, one of the primary benefits of a survey is to gather information about unobserved phenomena with the use of questionnaires and other means.
Therefore, the correct answer is option B
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The justification of the third step in her proof of the property of logarithms is;
; Power rule of exponents
<h3>What are properties of Logarithms?</h3>
From the full question, the second step stopped at;

Now, according to Power Rule for Exponents we know that (a^m)ⁿ = a^(m*n). That means that to raise a number with an exponent to a power, we will multiply the exponent times the power.
Thus,
will give us
using power rule of exponents
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