Mrs. jones has been caring for her terminally ill mother for a year now. she has continued to work at a demanding job, and she has three active teenagers. these long-term stressors should the number of nk cells, thereby immune system functioning.

reduce, decreasing

Explanation:

Mrs. Jones has been caring for her terminally ill mother for a year now. She has continued to work at a demanding job, and she has three active teenagers. These long-term stressors should reduce the number of NK cells, thereby decreasing immune system functioning.

the answer to your question is,

old stone age.

-mabel < 3