Answer:
The correct answer would be - sublimation.
Explanation:
The concept of the defense in psychology is presented by Freud who enumerated 10 defense mechanisms that are used to protect the individual from emotions or thoughts that are disturbing him/her by removing the things and thoughts or distorting reality.
Sublimation is one of the mechanisms that is based on turning the impulses that are not normal to society to socially accepted or in the norms of ideal for society. Lea is avoiding her impulses and thoughts and emotions by indulging or bury herself in the work.
Thus, the correct answer is - sublimation.