A material medium because they can’t travel through a vacuum
Answer: controlled processes.
Explanation:- Controlled Processes are processes in an individual’s mind that require a great deal of a person's mental resources. Generally, controlled processing is best performed when only one controlled activity is taking place.
However, the scenario above best illustrates Micheal state of focused awareness best illustrates the idea of controlled processes.
The fact that Claire who had a stroke followed by brain damage, has problems communicating because her words do not make sense and she is confused suggests that Claire has damage to her Wernicke's area. The Wernicke's area is a region of the brain important in language and responsible for the comprehension of speech. When damaged, problems like those of Claire can occur.
The answer from the given choices is "campaign".
A campaign refers to an arranged arrangement of exercises that individuals complete over some undefined time frame with a specific end goal to accomplish something, for example, social or political change.If somebody battles for something, they do an arranged arrangement of exercises over some undefined time frame so as to accomplish their point.