Question

question 3
in a scientific context, what does calibrated mean?
to adjust precisely for a particular function
to make random adjustments
to break an instrument
to mark units of measurement

Explanation:

In science, calibration is the process of adjusting an instrument or system precisely to ensure it functions correctly for a particular purpose. Random adjustments would not achieve accuracy, breaking an instrument is not calibration, and marking units of measurement is only a part - aspect of calibration but not the full definition.

Answer:

To adjust precisely for a particular function