The F in the mnemonic FIRST stands for Fast Which option correctly states the meanings...

The mnemonic FIRST is used to describe qualities of good unit tests in software development. Here, each letter stands for a critical attribute:

Fast: Tests should be quick to run.

Isolated: Tests should not depend on each other.

Reliable: Tests should consistently return the same results.

Self-Verifying: Tests should fully check their own results.

Timely: Tests should be written in a timely manner relative to the writing of the tested code. This mnemonic helps ensure that unit tests are effective and contribute positively to the development process .