Answer:
 “height is a quantitative variable ”
Explanation:
According to the question asked, answer is “height is a quantitative variable ”
Height is a quantitative variable because it is related to the measurement and in measurement, when we measure something we deal with number (numerical data)
Numerical data is a type of quantitative data that is why we say “height is a quantitative variable”  
There are some other possible questions in the given paragraph which I would like to mention here,  are as following:
Which are the categorical variables in the given report?
<u>Answer: </u>Energy star complaints
Top, Bottom or side-by-side freezer
Which are the quantitative variables in the given report?
<u>Answer:</u> Estimated Energy Consumption in kilowatts
Width, depth, and height in inches
Capacity in Cubic Feet  
What are the individuals in the report? 
<u>Answer: </u>The brand name and model