Correct Option (C)
The passage describes that after starting treatment, the person "soon became better and recovered completely a few days later." Region E on the curve depicts the final phase where the disease condition is actively diminishing towards full recovery. This significant decline in the disease state, leading to complete recovery, directly indicates that the treatment has yielded effective relief.
Incorrect Options:
-
C: This region typically represents the peak severity of the disease, where symptoms are most pronounced. The passage states the person "suffered for some days" before treatment, suggesting C would be during this period of peak illness, not effective relief.
-
D: This region would represent the initial phase of improvement following the commencement of treatment, where the disease condition begins to decline. While it signifies the start of recovery, region E more accurately reflects the advanced stage of effective relief leading to near-complete recovery, as the disease fully subsides.
-
The curve does not indicate the treatment: This is incorrect. The passage explicitly links the initiation of treatment to the subsequent improvement and recovery. The curve, by showing the progression from illness to recovery, illustrates the impact and effectiveness of the treatment.