practice it\nstability of test scores over time\ncompatibility\ndurability\nundependability\nefficacy\nreliab…

Brief Explanations:

Reliability in testing refers to the stability of test scores over time. Compatibility is about how well things work together, durability is about long - term physical or functional endurance, undependability is the opposite of being reliable, and efficacy is about effectiveness.

Answer:

reliability