You have been asked to create a care plan to support this person
The answer is D.
The basic metabolism depends on height, weight, age, sex and thyroid activity. Outside temperature and climatic conditions also influence significantly. Basal metabolism decreases with age from 2% to 3% per decade after adulthood. Children, on the other hand, have a basal metabolism that is twice as high as that of adults.
I believe 7% is almost correct because most people can try to quit smoking a year but hardly ever succeed