Step 1: Understanding the Concept:
BLAST is an algorithm and program used in bioinformatics to compare primary biological sequence information.
Step 2: Detailed Explanation:
In standard scientific literature, BLAST stands for "Basic Local Alignment Search Tool".
It allows researchers to compare a query sequence of proteins or nucleotides with a database of sequences.
Note that in the given choices of this exam paper, Option (C) lists "Basic Local Alignment Sequence Tool" instead of "Search Tool".
Among the available options, "Basic Local Alignment Sequence Tool" is the closest and matches the intended correct option in the paper's key.
Step 3: Final Answer
The correct option is (C).