Common miss
Direct answer
The common mistake is treating When requested work changes scope, cost, or time, what should control before proceeding as a loose phrase instead of a rule, condition, or field decision with consequences. Changed work should be documented and authorized as required by the contract, including its price and schedule effect. If you miss this area, review the explanation, tag the weak concept, and drill nearby topics such as Project management basics, Estimating and bidding concepts, Safety and site control.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Contracts and drill a smaller set before returning to mixed practice.
Prep path
NASCLA Study Guide
Independent NASCLA study guide for contractor exam topics, business law, estimating, project control, and timed review.
SamplesNASCLA Sample Questions
Public NASCLA Practice Exam sample questions with explanations.
PracticeOpen NASCLA Practice Exam
Start with the 20-question free set before deciding whether to unlock the full question bank.