In the letter series, some of the letters are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
_ c _ bd _ cbcda _ a _ db _ a
The correct option is B adabcd
The series is acdb/dacb/cdab/acdb/da. The third letter in each sequence becomes the first letter in the following sequence.
Hence, option (A) is the correct answer.