– THE GRE VERBAL SECTION –
Groups can be variously deﬁned and may vary in size, but it is safe to say that no social group includes all of humankind. The author repeatedly refers to truth in relation to geometrical propositions. See, for example, lines 3, 6, 7, 8, 10, 12, 13, and 18. The author (Albert Einstein) is laying the groundwork for an argument that the principles of geometry are only apparently true. To answer this question, you have to ﬁnd the antecedent of it. First, you discover that it refers to...