In a study of identical twins by the National Institute of Mental Health, when one twin had schizophrenia and the other did not, the schizophrenic twin always showed reduced activity in which lobe of the brain when compared to the unaffected co-twin?
A. parietal
B. medulla
C. occipital
D. frontal

The preferable option will be - D.

D. Frontal lobe.

Explanation:

The exact cause is unknown. According to the experts, a combination of factors such as physical, psychological, environmental, and genetic factors together can lead a person towards schizophrenia. A stressful or emotional life event can lead the person towards schizophrenia.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

i'll try what topic lol