1. If an organization or subcontractor has performed similar projects in the past and has kept records of how long specific activities actually took, these historical data
a. should be stored in files.
b. can be used as a guide in estimating the durations of similar activities for future projects.
c. should be shared with the customer after the contract is signed to show that the contractor can complete the project.
d. have no value for the current project.
2. The statement, "Network diagrams illustrate the technical constraints among activities," means the activities are constrained because
a. one activity cannot be started until the predecessors are finished.
b. some activities use the same resources that may not be available.
c. the activities use different resources to be completed.
d. each of the activities are independent from the other activities.