The correct choice is (c) In this approach, a sequence fragment is broken down to tuples of five nucleotides
The explanation: The tuples are converted to binary vectors in the nodes. By using a Viterbi algorithm, the shortest path among the vectors can be found, which is the best way to connect the tuples into a full sequence. Because this approach does not directly rely on detecting overlaps, it may be advantageous in assembling sequences with repeat motifs.