Below is an image from google trends that plots cats and dogs. it shows a line that is higher for dogs than cats. choose the most accurate description of what this data is actually showing based on what you know about how google trends works?
a. people like dogs more than cats.
b. people search for "dogs" more frequently than "cats".
c. there was a sharp increase in the dog population sometime between 2014 and 2015.
d. the popularity of dogs as pets is slightly increasing over time, while the popularity of cats is relatively flat.