Step 1: Read the 1993 figures from the table.
In 1993, the commissions were: A = 29800, B = 28000, C = 29100, D = 30060, E = 30000.
Step 2: Add up all five commissions to get the year's total.
Total = 29800 + 28000 + 29100 + 30060 + 30000. Adding step by step: 29800 + 28000 = 57800; 57800 + 29100 = 86900; 86900 + 30060 = 116960; 116960 + 30000 = 146960. So the total commission earned by all five salesmen in 1993 was Rs. 146960.
Step 3: Express B's commission as a percentage of this total.
Percentage = (B's commission / Total) x 100 = (28000 / 146960) x 100.
Step 4: Carry out the calculation.
28000 / 146960 = 0.1905 approximately. Multiplying by 100 gives about 19.05 percent.
Step 5: Round to the nearest option.
19.05 percent is closest to 20 percent among the given choices. Option (1) 30, option (3) 40 and option (4) 80 are all far too high to match this figure, so option (2) 20 is correct.