An Abridged Prospectus is a shorter version of the Prospectus that contains all the salient features of a Prospectus and accompanies the application form of public issues.
Source: Chapter 3, Section 3.1 – Issue of Shares
The answer is directly lifted from the textbook definition. For 1 mark, examiners expect two key points in one line: (1) it is a shorter/condensed version of the Prospectus, and (2) it accompanies the application form. Do not confuse it with the Draft Offer Document or the full Prospectus.