Answer:
Da Vinci was the world’s greatest genius. He mastered nineteen professions. It’s a feat no ordinary man could accomplish easily, if at all.
Explanation:
Opinion
They are all right except the first one. All I know is that the first one isn't cavaliers.
The correct answer is 1: Illustration-example.
Illustrations and examples are introduced by the transition phrases such as "for instance" and "for example". Some other linking words for giving examples are "to illustrate", "namely", and "such as". These linking words do not necessarily have to be at the beginning of the sentence.
You should add 'es"......
