The correct option is D 266
Since the given fractions are unlike fractions, we first have to convert them to equivalent fractions with same denominators.
2812=28 ÷ 212 ÷ 2=146
2718=27 ÷ 318 ÷ 3=96
5224=52 ÷ 424 ÷ 4=136
266 already has 6 in the denominator.
Since 9<13<14<26, we have 2718<5224<2812<266.
Thus, 266 is the greatest among the given fractions.