Answer: Biological learning theory
Explanation: If we take into consideration what we know about Piajet's theory, we can clearly see how a lesson is affected in terms of deliverance and instruction.
To this author, learning is a constructive process in which we learn the basis and then continue to perfect it; A lesson should start by explaining the basic terms of a topic and then going onwards with it. The education system is structred like this, according to the age of the person is what they are going to learn and then perfect it as they grow older.
The first important labor union in the United States was called the Knights of Labor. The correct option among all the options given in the question is option "c". This labor union was formed during the late 1880's. Although this union did not survive for a long time due to lack of leadership, still it was a force to reckon with when it first started.
It must be the second choice “It was important to have popular support beforehand”
Evidence: “...but he postponed action against slavery until he believed he had wider support from the American public.”
Two treatises of government