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Frontend Performance Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
Frontend Performance
What does the 'rating' field on a web-vitals Metric object represent?
A
A number from 0-100, the same as a Lighthouse score
B
A pre-computed classification ('good'/'needs-improvement'/'poor') derived from the metric's value against the library's own confirmed thresholds
C
The user's star rating of the page
D
Whether the metric was successfully measured at all
Check Answer