Considering the situation described above, the demands of work and her work projects are stressing Jennifer out, which results in <u>work-family conflict</u>.
This is because <u>Work-family conflict</u> is a type of phenomenon which occurs when an individual is having difficulty combining the work and family roles.
This is evident in Jennifer's situation whereby she is a single mother of two, yet she still works at night, stressing her out.
A <u>work-family conflict</u> often leads to psychological issues, as shown with the stress Jennifer is experiencing.
Hence, in this case, it is concluded that the correct answer is "<u>work-family conflict."</u>
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