<span>Personal space is practically universal concept familiar to all humans. Its basis is biological but depends heavily on cultural factors. In chilly Scandinavia, people prefer a good deal of personal space. It is not uncommon to see people at a bus stop two meters apart. In contrast, other places like Italy see physical closeness and contact as an important part of developing and maintaining social bonds.</span>
I think the correct answer from the choices listed above is option 3. The sentence that is the most paradoxical is that "He was old enough to understand the innocence of children." A paradoxical sentence is a sentence that contains self-contradictory words. In this case, the rods old enough and innocence seems to contradict each other.
