Learning that occurs but is not observable in behavior until there is a reason to demonstrate it is called learning.

The correct answer is:

Latent learning.

Explanation:

Latent learning cannot be seen immediately, it is a type of learning that occurs without reinforcement and can only be demonstrated when the subject is in a certain situation that requires to use the skills or information learned. Latent learning can occur through experience and the subject can only realize how much he have learned until he puts all the information or skills together, latent learning can also occur unconsciously after observing a behavior or action repeatedly, so when the subject is a situation already knows what to do.

For example; someone passes through the same supermarket in the daily route to work and unconsciously observes it, when the subject needs to go shopping to a supermarket, he already knows the route. The information of where the supermarket is can only be demonstrated when the subject needs to go shopping to the supermarket and already knows where it is located.

This type of learning demonstrates that a subject is capable of learning without reinforcement

by 1890, the united states had by far the world's most productive economy. american industry produced twice as much as its closest competitor--britain. but the united states was not a great military or diplomatic power. its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. britain's army was five times the size of its american counterpart, and its navy was ten times bigger. the united states' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. it faced no serious military threats and had little interest in asserting military power overseas.

the answer is a. since they were a huge producer of cotton and wanted the most money for it.