Which one of the following journal-article titles most likely represents an applied research study?
a. "Increasing recycling of fast-food containers: A test at an amusement park"
b. "Cognitive factors influencing logical reasoning"
c. "Measurement of reaction times to different coloured lights"
d. "The influence of a food reward on maze running behaviour in kittens"
Answer: "Increasing recycling of fast-food containers: A test at an amusement park"