The answer is: Time, organization, and size
As the length of contact increased, the more time you would spend with the groups. This often correlated with the increase in size of the organization (even though larger organization tend to develop its own members division and not all members would know one another)
The answer to your question is letter C. The group that has been a major force in calling for the protection of human rights in Central America during the 1980's and 1990's was the liberation theology clergy. The group has been important in getting support to protect human rights.
Grandfather Clause is the correct answer.
The Grandfather Clause was a way found to deny suffrage to the black population. It was a Reconstruction Era policy that allowed only people, whose grandfathers were voters, to vote. Thus, freedmen were left out from voting. In 1915, the U.S Supreme Court found this clause to be unconstitutional since it violated equal rights that had already been guaranteed by the 15th Amendment. However, it wasn't until 1965 that Congress was able to end this discriminatory practice.
Replication is used to ensure there is an adequate number of observations in each experimental condition.
<h3>
What is observation?</h3>
Information from a primary source is actively acquired through observation. Observation of living things makes use of the senses. Using scientific tools to perceive and record data is another way that observation can be used in science. The phrase can also be used to describe any data gathered for the scientific endeavor. Observations can be quantitative if a numerical value is assigned to the observed phenomena by counting or measuring, or qualitative if just the existence or absence of a property is documented.
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B
Explanation:
Developed in the 20th century as people began to live longer and have fewer children
