Impairment occurs at :

Correct option is C

Impairment refers to the loss or abnormality in the structure or function of an organ. It occurs at the organ level and can lead to functional limitations or disabilities, depending on its severity.
Information Booster:
 Impairment is a part of the International Classification of Functioning (ICF).
 It can be congenital or acquired.
 Examples include vision loss, hearing impairment, etc.
 Impairment differs from disability and handicap.
 Requires medical or therapeutic intervention for management.