6. The cause-effect analogy 'heavy rain : flood :: excessive eating : obesity' simply means that _____ .
a. A heavy rain causes obesity while excessive eating causes flood.
b. Flood causes excessive eating while obesity causes heavy rain.
c. Heavy rain causes flood while excessive eating causes obesity.
d. When there is flood due to rain, people eat a lot and end up with obesity. Which of the options best completes each of the expressions in item numbers 7-12?​