Karen is a college student who has experienced moderate feelings of sadness and worthlessness for over 2 years. Most of the time, she still goes to class and meets her other obligations. Occasionally, however, her depressive symptoms intensify. When this occurs, she stops going to class, isolates herself, and even experiences suicidal thoughts. Karen could be diagnosed with

Double depression

Explanation:

Double depression can be described as the co-existence of two types of depressive order which are major depressive disorder and persistent depressive disorder.

Recent studies have shown that Double depression tends to be more serious than either Major depressive disorder(MDD) or Persistent Depressive disorder(PDD) and that individuals who experience Double depression disorder relapse more often than those with either MDD or PDD alone.

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.