Question

which is the best reason for using a temperature probe instead of a simple laboratory thermometer?
to record individual measurements several times in a day
to record continuous measurements over several minutes
to make measurements in degrees celsius
to make measurements in degrees fahrenheit

Explanation:

A temperature probe can record continuous measurements over time (like several minutes), while a simple lab thermometer is often for single or discrete measurements. The other options: recording individual measurements several times a day can be done with a thermometer too; Celsius/Fahrenheit units are about scale, not the probe's advantage. So the key is continuous recording over minutes.

Answer:

to record continuous measurements over several minutes