A - only having one sex partner at a time.
No other answer comes close to being correct. Most modern-day societies are practicing monogamy as the main type of relationship between two people.
I can give you my take on it:
In command economies the quantity and more importantly the prize of the products is decided by the government and not by the people in production. As a result, people in the production can't have the motivation of producing more, as they won't benefit from it. So command economy encourages low motivation among the workers (i believe this was the case in the Eastern Block)
B) to spread slavery into new territories
It should be noted that research design that seeks to determine the nature of the relationship between two variables, such as amount of in-ear headphone use and the prevalence of hearing loss in old age is Correlational research.
<h3>What is Correlational research?</h3>
Correlational research can be regarded as the non-experimental research method which helps in determining the relationship between two variables using statistical analysis.
It determine the nature of the relationship between two variables.
Learn more about Correlational research at:
brainly.com/question/9363521
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