The given letter series in below pattern.
cab d
After using the pattern the complete letter series will be as below.

Correct Option: A

The given letter series in below pattern.
cab d
After using the pattern the complete letter series will be as below.
cab d/ c a bd/ ca b d/ c abd

As per given question, the letter series is following the below pattern.
d m n m
Using the same pattern, we will get complete letter series.

Correct Option: C

As per given question, the letter series is following the below pattern.
d m n m
Using the same pattern, we will get complete letter series.
d m n m/ dm nn / dm n n

As per given question, the letter series is following the below pattern.
a b b b ba
After using the pattern the complete letter series will be as below.

Correct Option: B

As per given question, the letter series is following the below pattern.
a b b b ba
After using the pattern the complete letter series will be as below.
a b b b ba / a b bb ba

As per given question, the letter series is following the below pattern.
a b b a
Using the same pattern, we will get complete letter series.

Correct Option: A

As per given question, the letter series is following the below pattern.
a b b a
Using the same pattern, we will get complete letter series.
a b b a / a bb a a b b a

The pattern of given letter series is :-
a abaa c
Using the same pattern, we will get complete letter series.

Correct Option: C

The pattern of given letter series is :-
a abaa c
Using the same pattern, we will get complete letter series.
a abaa c/aaba c c/a a b