SRE and DevOps fundamentals sample question with answer 72

Question:
Why are peer reviews the most effective means of review for most changes?

1. They reduce the cost of reviewing changes
2. They aren't; you should always have a manager review any change
3. They eliminate the risk of making changes
4. They are performed quickly, in a distributed fashion, by people familiar with the system being changed

Answer:
D - is the correct answer. Peer reviews are optimal for the vast majority of changes that aren't explicitly risky or cross-technology