This reminds me of the squiggles and drawings and wind
Assuming this refers to Flowers for Algernon, no, they do not. At the end of the story, Charlie begins to see a recession in his intelligence. He reverts back to how he was at the beginning of the story. This proves that Dr. Strauss' experiments are not permanent.
The detail which best illustrates a contradiction in Okonkwo's character is that he waits up with Ekwefi while their daughter is with the priestess. The correct option is B. Okonkwo is a great warrior in his village and a very rich man. He loves showing his masculinity by shying away from anything that will allow him to show his tender emotions and he always make jest of men who relate lovingly with their wives. Okonkwo waited up with one of his wives when their daughter was sick and she was been taken care of by a priestess. This action shows another side of Okonkwo, who normally will make jest of any man who do that.
They can investigate about the topic being persuaded about throughout multiple different sources, they can not act on a whim and be like hey that sounds cool lets do it.