Which are the competing constraints that a project manager should address when tailoring a project?

Cost, scope, and schedule form the foundational triple constraint in project management, and the PMBOK Guide identifies these - along with quality, resources, and risk - as the competing constraints that a project manager must address when tailoring a project. Among the answer choices, only option A correctly names the three core elements of the triple constraint that every project manager must balance.

Sponsorship is not a competing constraint - it is a governance and support factor; while risk and quality are constraints, sponsorship does not belong in this grouping.

Sponsorship is not a recognized project constraint; replacing cost with sponsorship makes this option incorrect.

Resources, quality, and communication are important project factors, but communication is not listed as a core competing constraint in the PMBOK's constraint model.