Final Answer:
The greatest rate of inflation is indicated by the change from d) 220 to 245.
Step-by-step explanation:
Inflation is determined by the rate of change in the price index. Looking at the given options, the change from 220 to 245 represents the greatest increase in the index.
This change is a jump of 25 points, indicating a substantial increase in prices over a relatively short period. Comparatively, the other options show smaller increments: 100 to 110 is a 10-point change, 150 to 170 is a 20-point change, and 180 to 200 is a 20-point change as well.
However, the 220 to 245 change reflects the highest absolute increase, signifying a more pronounced inflationary trend.
The larger the change in the price index within a given timeframe, the higher the inflationary pressure, and in this case, the leap from 220 to 245 represents the most significant change, indicating the greatest rate of inflation among the options provided.
Hence, therefore option d) is correct.