Select the correct sequence to complete the pattern:

pqrrqppqrrqpp ?

The correct option is qrrq.

Step-by-step breakdown:

1. Analyze the given sequence:
p q r r q p p q r r q p p ?

2. Identify the repeating pattern in the sequence:
Notice that the group of 6 letters p q r r q p repeats consecutively:
- First repeating unit: p q r r q p
- Second repeating unit: p q r r q p

3. Complete the third repeating unit:
The third repetition begins with the letter p.
To follow the pattern p q r r q p, the missing letters directly following p must be q r r q.

Therefore, the sequence that replaces the question mark is qrrq.