Schedule dependenciesinclude:(Select TWO).

Successor activities are tasks that cannot start or finish until another activity (their predecessor) has started or finished, establishing a direct dependency in the schedule.

Risks are uncertain events that may affect the project schedule, but they are not inherent schedule dependencies themselves.

Constraints are limitations or restrictions that affect project scheduling, such as fixed dates or resource availability, but they are not activities that define dependencies.

Predecessor activities are tasks that must be completed or started before another activity (their successor) can begin or finish, creating a fundamental schedule dependency.

Issues are problems that have occurred and require resolution, which can impact the schedule but are not fundamental dependency types.

Assumptions are factors believed to be true for planning purposes, which can influence the schedule but are not direct activity-to-activity dependencies.