According to Erickson's theory of psycho-social development, and going by the description above, Tom is demonstrating FIDELITY.
The stage of Fidelity occurs during adolescence (Age 12-19) which should be the range of Tom's age, being an high school senior. His goal and dedication to become a Medical Doctor characterizes the existential question of the Fidelity Stage: Who am I? Who can I be?.
Answer:
Phycologist in every subfield draw on and contribute to knowledge from other subfields.
The Chinese found out that they could use coal to heat things and make steel.
The correct answer we are looking for is the transience.
One of the seven sins of memory. The ability of Giorgio to recite a poem fades because of the so called transience.
This is known as the transitory nature. Transience means passing with time or is the state of being brief and short-lived.
