Step 1: Analyzing the sequence.
The sequence is:
6, 8, 8, 1, 2, 6, 8, 6, 1, 2, 3, 6, 8, 8, 1, 2, 3, 4, 6, 8, ?
Step 2: Identifying the repeating pattern.
The sequence follows a repeating pattern of "6, 8" followed by a series of increasing numbers starting from 1.
The pattern alternates between "6, 8" and an increasing sequence of numbers:
6, 8, 8, 1, 2
6, 8, 6, 1, 2, 3
6, 8, 8, 1, 2, 3, 4
6, 8, ?
Step 3: Predicting the next number.
Following the pattern, the next part of the sequence should be "1", continuing the increasing sequence.
Thus, the correct answer is option (B) 1.