According to me the answer is option C i.e M . Notice that the averages mentioned are not same. So if we find the SD for avg score =1 for every batsmen i.e. for K if avg score=1 SD=0.16
for L if avg score=1 SD=0.15
for M if avg score=1 SD=0.11
for N if avg score=1 SD=0.32
now since we have same average score base line, the batsmen with least SD has the most consistency. Thus answer should be option C i.e.M.