Yana, an 82-year-old, active great-grandmother, recently was admitted to a local nursing home. upon visiting his mother, sergei is excited to report on the grandkids and great-grandkids. however, sergei is surprised at his mother's despondence and lack of interest in hearing about the children she loves so much. yana's attitude seems to reflect ) activity theory(b) selective optimization(c) institutionalism(d) biological maladjustment

C. Institutionalism

Explanation:

Institutionalism revolves around the use of  public institutions and corporation in caring  for the mentally ill or elderly.

It is common  for patients to develop an institutionalization abnormality where patients defect from  social and life interaction.

This behavior roots from the long periods that patients have spent in nursing homes, and institutions.

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.