The travellers were worried after twenty kilometres because
ait was a lonely countryside.
bthey probably feared of having lost their way.
cthe rain began to fall.
dit was getting colder as they drove.
AnswerUPSC’s answer is (b).
After about twenty kilometres there was still no sign of the town, which the map placed roughly fifteen kilometres away. They had already gone further than the distance they expected, so they began to fear they had taken a wrong road. Rain and cold had been mentioned earlier and are not tied to the worry; the inference is that they feared having lost their way.
Why each option is right or wrong
(a) Wrong. The lonely countryside is not given as the cause of their worry.
(b) Right. They had gone beyond the expected distance with no town in sight.
(c) Wrong. Rain began earlier, before the worry set in.
(d) Wrong. The cold was noted earlier and is not the stated cause.
Answer: UPSC’s key. Explanation: written by UPSC Grade, not by UPSC.