Final answer:
Option (b) pgl is different from the other groups because it does not consist of consecutive letters in the alphabet, unlike (a) jkl, (c) mpr, and (d) thw.
Step-by-step explanation:
The question is asking to identify the group of letters that is different from the others based on a certain pattern or principle. In options (a) jkl, (b) pgl, (c) mpr, and (d) thw, we can look for patterns relating to the alphabet, phonetics, or some form of categorization.
Upon observation, the answer is (b) pgl, because it includes letters that do not follow a consecutive sequence. The other groups, (a) jkl, (c) mpr, and (d) thw, are comprised of consecutive letters in the alphabet.