Answer: A. optimization.
Step-by-step explanation:
Selective optimization is a strategy for compensation for improving the health as well as well being in human beings who are experiencing any kind of disabilities or in old age people.
It is recommended that physically disable and old age people optimize their abilities to perform functions while compensating the losses and declines.
According to the given situation, Thora is compensating for the loss of fine-motor movement coordination. She paints in the morning to avoid tremors and working slowly so as to complete her project. She is optimizing.