Javier is studying the firing of neurons in the brains of rats as part of his dissertation research on memory. he is disciplined in his research process and in his record-keeping, and follows his advisor's recommendations to the letter, as he wants to eventually accomplish a lot in this field. the big five trait that best describes this aspect of javier's personality is ____.
a. openness
b. extroversion
c. conscientiousness
d. agreeableness