How do we know that myrtle wilson is not an intellectual?

Myrtle Wilson is one of the known characters in The Great Gatsby. She is married to a poor man named George but gets involved with the Tom Buchanan with the desire to achieve a more wealthy lifestyle. She is not an intellectual for she uses her "fleshiness" to attract the wealthy man. However, her ambition led to her untimely destruction. 

Then what do i do after i read the excerpt? i’m not really understanding the question here.