Final answer:
The false statement regarding the Watson-Crick model of DNA is that the two strands form a left-handed helix; they actually form a right-handed helix.
Step-by-step explanation:
The statement in the question that is false regarding the Watson-Crick model of DNA is B) The two DNA strands form a left-handed helix. In the Watson-Crick model, DNA is structured as two strands that twist around each other to form a right-handed helix. The strands are composed of a sugar and phosphate backbone with nitrogenous bases stacked in the center of the molecule. These strands are antiparallel, meaning the 3' end of one strand is opposite the 5' end of the other strand, allowing for the formation of complementary base pairs: adenine with thymine, and cytosine with guanine.