Question

which is the best definition of the bold word as it is used in the sentence? we can use technology to study and learn about agriculture. drones can help check the amount of water in the soil and monitor plant health. to observe and check the progress or quality of (something) over a period of time a person who observes a process or activity to check that it is carried out fairly or correctly a screen which displays an image generated by a computer an instrument or device used for observing, checking, or keeping a continuous record of a process or quantity

Explanation:

The word "monitor" in the context of the sentence refers to an instrument or device used for observing, checking, or keeping a continuous record. This is because in the sentence, it's about using technology (like drones) to observe aspects like the amount of water in soil and plant health over time, which aligns with the function of an instrument/device for continuous observation/record - keeping.

Answer:

An instrument or device used for observing, checking, or keeping a continuous record of a process or quantity.