Question

the middle class that emerged during the industrial revolution consisted mainly of
o working class people who got factory jobs.
o a mix of government officials and skilled workers.
o wealthy people who owned factories and businesses.
o a mix of working class and upper - class workers.

Explanation:

工业革命期间出现的中产阶级主要由拥有工厂和企业的富人组成。工人阶级从事工厂工作属于工人阶级范畴；政府官员和熟练工人的混合以及工人阶级和上层阶级工人的混合都不符合中产阶级在工业革命时期的主要构成特点。

Answer:

wealthy people who owned factories and businesses.