Answer: C. Microfilaments
Explanation: Microfilaments, also called actin filaments, are protein filaments in the cytoplasm of eukaryotic cells that form part of the cytoskeleton. They are primarily composed of polymers of actin, but are modified by and interact with numerous other proteins in the cell. Microfilaments, or actin filaments, are the thinnest filaments of the cytoskeleton and are found in the cytoplasm of eukaryotic cells. The polymers of these linear filaments are flexible but still strong, resisting crushing and buckling while providing support to the cell.
Ohho... The answer is a substance abuse course, however expect to be imprisoned because that is a felony. (Also I'm assuming you mean't a BAC of 0.05%.).
You should pick both colonies for the further analysis. Colonies are white or blue depending on their possibility to metabolize X-gal product (the blue colonies can metabolize X-gal product, and they encode for lacZgene). Whether it encodes or lacks the lacZ gene, it can still uptake the antithrombin gene and grow on the medium through electroporation.