The correct option is (a) Holiday packages
Explanation: An invitation to tender might be issued for a range of contracts, including; equipment supply, the main construction contract (perhaps including design by the contractor), demolition, enabling works and so on.
An invitation to tender might include:
• A letter of invitation to tender.
• The form of tender.
• Preliminaries.
• The form of contract.
• A tender pricing document.
• A drawing schedule.
• Design drawings.
• Specifications.