Who must sign the bid for acceptance in a sealed bidding process?

In a sealed bidding process, it is the Government's responsibility to sign the bid for acceptance. This signature represents the official acceptance of the contractor's bid proposal, which has been submitted in response to a solicitation. The Government's agreement to the terms set forth in the bid establishes a legal contract upon the contractor's performance of the specified activities.

Having the Government sign the bid is crucial because it signifies that the bid has been reviewed and evaluated according to the applicable contracting regulations and policies. This acceptance then triggers the contractual obligations for both parties involved. The contractor submits the bid but does not exercise any control over the acceptance; that authority lies solely with the Government entity conducting the procurement process.

The other options reflect parties who do not have the authority or responsibility to finalize the acceptance of the bid in the context of a sealed bidding process.