Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
To determine whether the tip left at the end of a meal is related to the size of the total bill at their restaurant, Chez Michelle, data were gathered for 10 customers. The data and summary statistics are shown below.

-A study examined consumption levels of oil and carbon dioxide emissions for a sample of municipalities. The response variable in this study is

A) oil brands.
B) oil consumption levels.
C) carbon dioxide emissions.
D) municipalities.
E) oil prices.