A for me.
There is no mention of "high-paying service occupations in 1982" in the passage.
It should be A. it is a ratio problem can be clearified by some numerical examples. according to the question,
1. 1982 and 1995 the greatest increase in the number of people employed will be in the category of low-paying service occupations.
2. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share. So, for example:
1982 low = 80 high = 20 total = 100
1985 low = 136 high = 64 total = 200
change (#) low = 56 high = 44 total = 100
change (%) low = 70 high = 220 total = 100
to hold the premises of the question, there must be greatest number of people in 1982 so that the increase in number of people is greter for low job and % increase is higher for hihg payig jobs. A says exactly the same.