The answer is: a filter of lifetime experiences
A filter of lifetime experiences refers to a list of events that happen to certain individuals in the past that eventually lead to that individual's decision today.
From the example above, Alisa's experience changes in her view regarding society and the roles that each people in different social class play for the well being of the society as a whole. This lifetime experience lead to Alisa's decision in pursuing political science in order to help as many people as possible.
PDF, or docx. File would be the easiest to convert resumes.
An unlimited amount means that there would always be more of it: so they can't run out of it, there will always be more! and since they can't run out of it, they don't have to worry or make choices - they can just use it without any limits and thinking about it.
So the correct answer is
a. have to place limits on its use.