The first significant supporting evidence for a biological cause of a mental disorder was the 19th century discovery that the psychotic disorder called general paresis was caused by the same bacterial microorganism that causes

syphilis

Explanation:

The first significant supporting evidence for a biological cause of a mental disorder was the 19th century discovery that the psychotic disorder called general paresis was caused by the same bacterial microorganism that causes syphilis.

General paresis is a severe neuropsychiatric disorder that is evident in the late stage of syphilis caused by the bacteria Treponema pallidum. Untreated syphilis advances to neurosyphilis (general paresis) which a nervous disorder that affects the spinal cord and the brain, causing brain damage. Symptoms of general paresis includes; Language problems, such as saying or writing words incorrectly, Decreased mental function, such as problems thinking and with judgment.

the correct answer is individualism and exchange. at this stage, children begin to question the rules, because they can see that there is more than one side to them. different individuals have different viewpoints. they won't be able to reach this stage because of ignorance, a lack of ethics or personal biases. that is because people with that characteristiscs are not able to distinguish what is good or what is bad and they can't pursue their individual interests.