The competition authorities are investigating the takeover of Company Z by a larger company, Company...

Competition authorities focus primarily on market structure and competition, not on whether the bid is generous or on employment promises. Their concern is: Will this merger substantially lessen competition?

In food retailing, a key issue is local market concentration – for example, a single group owning too many supermarkets in particular towns or regions. A classic remedy is for the bidder to divest overlapping outlets so that effective competition remains.

B. Agreeing to dispose of specified outlets which overlap geographically directly addresses the competition authority’s main concern and is the standard structural remedy used in practice.

A (more cash) is irrelevant to competition issues.

C (job guarantees) is mainly a political/employment concern, not an antitrust one.

D (promise to pass on cost savings) is difficult to monitor and enforce and is normally viewed as less credible than structural remedies.

So the action most likely to persuade the competition authorities is B.