Final answer:
The brightly-colored throat flap display by the male flying dragon lizard is a courtship behavior aimed at attracting potential mates, which is a common strategy in various species for mating success.
Step-by-step explanation:
The male flying dragon lizard's display of a brightly-colored flap of skin at its throat is a courtship behavior that is mainly directed towards attracting potential mates (Option B). This visual signaling is a form of sexual selection where males attempt to attract female attention and demonstrate their suitability as partners. These types of courtship behaviors are essential for mating success and species propagation. In various species, these displays can vary greatly, from visual exhibitions like the peacock's tail feathers to constructing elaborate structures such as the bowerbird's decorated bower.