He is journaling about his strengths and weaknesses is Mateo’s actions BEST demonstrate introspection. Because then only he can understand the potential of himself for doing anything.
Strengths are the potential traits and skills that a person poss of and with the help of the strength, the person build themselves in a job career.
Weakness is the skills and trait that is considered negative for any person that lags them down in the career, they always tried to overcome their weakness.
Thus, option B is correct.
For more details about strength and weakness, click here:
https://brainly.com/question/1287006
#SPJ1