Courtship behaviour in animals is a set of display behaviours in which an animal attempts to attract a mate and exhibit their desire to copulate. These behaviours often include visual displays, sound production, or specific movements to attract mates. Options 1, 2 and 3 are examples of courtship behaviours. However, basking in the sun by a lizard is not a courtship behaviour but a thermoregulatory behaviour where lizards absorb heat from the sun, which is necessary for their metabolic processes.