the answer would be D.  Presence of cell membranes.
 
        
             
        
        
        
Levels of activity in the frontal lobe tend to be lower in the brains of people with schizophrenia than in other people.
Frontal lobe is the part of brain located in the anterior portion of brain. It is responsible for cognitive works like memory retention, problem solving, impulse control, emotions, etc. It is the largest of the four lobes of the brain.
Schizophrenia is a disorder of the brain. People with this disorder often misinterpret the reality. The common symptoms of the disease include delusions, hallucinations, disorganized speech and trouble with thinking. The disorder is considered to be caused by the mixed effect of genetics, environment, and alterations in the brain.
To know more about schizophrenia, here
brainly.com/question/23035586
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We were not able to see microtubules, centrioles, rough endoplasmic reticulum, smooth endoplasmic reticulum, plasma membrane, ribosomes, golgi apparatus, vesicle, mitochondrion and chloroplast.
        
             
        
        
        
When boys go through puberty their voices change and they start to grow hair on different area of their body such as their chest, face and pubic area. Also they will start to get acne