Final answer:
Ratio level of measurement possesses all the characteristics of interval measurement and has a true zero.
Step-by-step explanation:
The level of measurement that possesses all the characteristics of interval measurement and has a true zero is Ratio. Ratio scale data has a definite ordering, and the differences between data can be measured. In addition, it has a zero point, which allows for the calculation of ratios. Examples of ratio scale data include measurements such as weight, height, temperature in Kelvin, and reaction time.