B. Binary. Is the correct answer :)
Answer: Cross-contamination
Explanation: it is the transfer of harmful organisms from one surface to another that is often the cause. This is especially troublesome for raw, ready-to-eat foods, such as salads or other produce.
Is a short musical idea,[5] a salient recurring figure, musical fragment or succession of notes that has some special importance in or is characteristic of a composition: "The motive is the smallest structural unit possessing thematic identity".<span>[3]</span>