Answer:
The correct option is option D, which is activity attributes.
Explanation:
As per the question the the set is a wholesome of schedule related information about each activity including the predecessors, successors, logical relationships and other information adjacent to this. In this context
Option A is not true because it is just the list of all the possible activities
Option B is not true as it does not provide sufficient information regarding the resources, constraints, and imposed dates.
Option C is not true because it does not provide the information regarding the predecessors, successors, logical relationships and lead-lags.
Option D is true only as it encapsulates all of the items mentioned in the question.