N project time management, the next step after defining project activities is: a. planning schedule management. b. controlling the schedule. c. determining their dependencies. d. estimating activity duration.

C. Determining their dependencies

Explanation:

In project time management, there are several procedures which includes;

1. Planning of the management schedule

2. Definition of project activities

3. Sequencing (determining their dependencies)

4. Estimation of activity resources

5. Estimation of activity duration

6. Development of schedule

The next step after the definition of project activities (which is the second step) in project time management, is the sequencing of activities which can also be interpreted as determining their dependencies. This process simply means taking the list of activities identified in the previous step (defining project activities) and arranging them in the right order while exploring the linkage between them.