The writer's main point in the first paragraph is that corvids are highly intelligent birds, with intelligence comparable to that of primates. This is evident from their complex behaviors, such as tool use and social learning, which are often seen in primates.
Corvids don't use the same tool for every task; they modify. Similarly, IELTS rewrites the passage. For every keyword in a question, imagine 2-3 synonyms. The writer's main point in the first paragraph
— Betty invented the tool without needing other crows to show her. they modify. Similarly