UPSC 2016 CDS I English Paper

In the given sentence, 'but I' must be replaced with 'I' as both the words 'though' and 'but' can't be used together in a single sentence because they both mean 'nonetheless'. Hence, 'but' is redundant here. Also, 'though' is followed by the adverb 'yet'. Since, 'yet' is not given in the options so subject will be placed after comma.