Which of the following novels of Thomas Hardy was first published in an abridged form as Hearts Insurgent?

The correct option is Jude the Obscure.

Explanation:
Thomas Hardy's famous and controversial novel, Jude the Obscure, was first published serially in Harper's New Monthly Magazine between December 1894 and November 1895.
Due to the magazine's strict editorial standards and concerns regarding the novel's provocative themes of marriage, religion, and social class, the story was heavily censored and abridged for its serial run.
During this initial periodical publication, it was serialized under the title Hearts Insurgent (having also been briefly titled The Simpletons in its very first installment).
The work was later restored to its original, unabridged form and published as a single volume in book form in November 1895 under the title Jude the Obscure.