; (B) is limited to one occupant who shall be the mentally or physically impaired person; and (C) has no more than 300 gross square feet. (2) Long term care The term long term care means care equivalent to that which would be covered by the Medicare or Medicaid program in a residential nursing facility if furnished to a beneficiary under such program. (3) Caregiver The term caregiver means an adult who provides care for a mentally or physically impaired person. A caregiver shall be either related by blood, marriage, or adoption to, or the legally appointed guardian of, the mentally or physically impaired person for whom the caregiver is caring. (4) Mentally or physically impaired individual The term mentally or physically impaired individual means an individual who qualifies for benefits under the Medicare or Medicaid program and requires assistance with two or more activities of daily living, as certified in writing provided by a physician licensed by the State in which the individual resides.