Respuesta :
I would say 2) calculating the percent of error by using a proportion
Answer:
The answer would be 1) extending the sense of sight by using an instrument.
This is because you are using a ruler (your instrument) to see how long the stick is. It can't be 2) calculating the percent of error by using a proportion, because you aren't calculating the percent of error from the stick. It also can't be 3) measuring the rate of change of the stick by making inferences, because you are using a ruler, making it the exact measurement, not making an inference. It can't be 4) predicting the length of the stick by guessing, because again, you're using a ruler to see the exact measurement of the stick.