Which sentence would be the most appropriate to follow sentence 14?

Directions for the question:

The following passage is an early draft of an essay. Some parts of the passage need to be rewritten. Read the passage and select the best answer for the question that follows. Keep in mind that some questions are about particular sentences or parts of sentences and ask you to improve sentence structure or word choice. Other questions ask to consider organization and development. In choosing the answer, follow the requirements of standard written English.

[1]The popular notion about marriage, that it springs from the same motives, and covers the same human needs is synonymous with love. [2]Like most popular notions this also rests not on actual facts, but on superstition.

[3]Marriage and love have nothing in common. [4]They are as far apart as the poles are; in fact, antagonistic to each other. [5]No doubt some marriages have been the result of love. [6]Not love could assert itself only in marriage; much rather it is because few people can completely outgrow a convention. [7]There are today large numbers of men and women to whom marriage is nothing but a farce, but who submit to marriage for the sake of public opinion. [8]At any rate, while it is true that some marriages are based on love, and while it is equally true that in some cases love continues in married life, I maintain that it does so regardless of marriage, and not because of it.
[9]Marriage is primarily an economic arrangement, an insurance pact. [10]It differs from the ordinary life insurance agreement only in that it is more binding, more exacting. [11]Its returns are insignificantly small compared with the investments. [12]If you take out an insurance policy, dollars and cents must be paid by you. [13] If woman's premium, however, is her husband, she pays for it with her name, her privacy, her self-respect, her very life. [14] Man too pays his toll, but as his sphere is wider, marriage does not limit him as much as woman.