Final answer:
The cognitive trends from genus Australopithecus to genus Homo include an increase in brain size and the development of tool-making abilities.
Step-by-step explanation:
The cognitive trends from genus Australopithecus to genus Homo include an increase in brain size and the development of tool-making abilities. Australopithecus had a brain size similar to great apes, while Homo species, such as Homo habilis and Homo erectus, had larger brains. Additionally, Australopithecus had limited tool-making abilities, while Homo species developed more advanced stone tool-making techniques.