Step 1: Identify the theme of the paragraph
Sentences (A), (C), and (D) deal with the effects of the Industrial Revolution on human identity, labor, and ideology (Marxist response), while (B) is grammatically awkward and incomplete.
Step 2: Verify the logical flow
(D) provides the historical background: Industrial Revolution transformed labor.
(C) follows up with the consequence: the workers' response via Marxist philosophy.
(A) shifts the discussion to the newer Human Relations movement as a response to the previous harshness.
Step 3: Examine sentence (B)
(B) reads: "Vast, impersonal factories in which rubbed away their identities..." — This sentence is grammatically incorrect and lacks a subject or predicate, making it an incoherent standalone statement.