题目选项分析

Economist: In today's post-industrial economy, higher education is essential for achieving prosperity. Without a college degree or higher, citizens do not have access to the highest quartile of salaries, and only individuals earning salaries in this highest quartile have enough disposable income to buy real estate and invest in long term assets.

The argument assumes that

【选项】all the jobs in the highest quartile of salaries require skills that are always covered as part of a college education