Final answer:
Project sponsors according to PMBOK are individuals or organizations that provide resources and support for the project, not typically involved in day-to-day execution or monitoring.
Step-by-step explanation:
According to the PMBOK (Project Management Body of Knowledge), Project Sponsors are individuals or organizations that provide resources and support for the project, which aligns with option 1 from the choices given. They play a key role within project management by ensuring that the project has sufficient funding, by approving project deliverables, and by assisting with high-level project guidance. Project sponsors are essential stakeholders; they are not typically responsible for executing or monitoring the project on a day-to-day basis, which are roles usually filled by the project manager and the project team.