which of the following correctly identifies an SI unit and the tool that is used to measure it?
a. meter, ruler
b. degrees Fahrenheit, thermometer
c. gram, scale
d. millimeter, meniscus
Is it a?
Yes.
Yes, the correct answer is option a. The SI unit for length is the meter, and the tool used to measure length is a ruler.
To arrive at the correct answer, you need to know what SI units are and their corresponding measurement tools. SI units (International System of Units) are the globally recognized standard units of measurement used in science and everyday life. The SI unit for length is the meter (m). A ruler is the tool commonly used to measure length in meters.
Therefore, by matching the SI unit "meter" with the measurement tool "ruler," the correct identification is "a. meter, ruler."