Luca writes a daily blog about why people should eat healthy foods and ways to eat healthfully. What are the purposes of his blog? to entertain and advertise to advertise and inform to argue and inform to argue and entertain

to entertain and advertise is correct

Explanation:

blogs attract readers because of how entertaining they are, like with me i commit to something like helping a cat or a dog cause how entertaining it is and just the fact that the cat or dog is starving or is homeless, most blogs are supposed to be entertaining for that purpose, to get readers to help with the cause

he uses the metaphor autumn.