Which practice involves revealing a sub-bid to secure a lower bid from another subcontractor?

The correct practice that involves revealing a sub-bid to secure a lower bid from another subcontractor is bid shopping. This practice occurs when a general contractor discloses the bids of one or more subcontractors to other subcontractors with the aim of getting a lower price. It often undermines the original subcontractor's price and can lead to trust issues in the bidding process.

In bid shopping, the general contractor's intention is to maximize profit by exploiting the competition among subcontractors, which can also adversely affect the quality and viability of bids received. This practice is typically viewed negatively in the construction industry as it can result in unfair competition and possible violations of ethical standards in contracting.

Understanding bid shopping is critical for contractors, as it can have significant implications on their business relationships and project outcomes.