<span>A researcher who would like to examine whether children who are high math achievers have better memories than do low math achievers should use a correlation design. A correlation design enables the person to find the connection between two different parties, assign variables and research the possible truth and from here, they can derive results.</span>
Answer:
a. proved essential for the success of Grant’s attrition strategy.
Explanation:
The Union is known as the "North" and the Confederacy is known as the "South".
At the event of the American Civil War, the Union also know as the "United States of America" under the presidentship of Abraham Lincoln was opposed by 11 southern states known as the "Confederate States of America" under the presidentship of Jefferson Davis.
Abraham Lincoln believed that he could win over the Confederacy states until and unless he have control over the border states, mainly Maryland.
Union's man power was more as they had nearly 20 states associated with them.
The Union in order to win over the Confederacy States made strategies to gradually reduced the power of the Confederacy States.
Thus the advantage that the Union's soldier or manpower have over the Confederacy has proved to be essential for the success of Grant’s attrition strategy.
Hence the answer is
a. proved essential for the success of Grant’s attrition strategy.
The correct answer is token economy. This is a system that
is defined as a kind of contingency management by which is being based on the
systematic reinforcement based on the targeted behavior and that the reinforcers
are likely to be referred to as symbols or tokens in exchanged for other reinforcers.