After obtaining Hermes's Sight on Saria, go to Callas (outside the cave). Talk to Callas, and then return to Agrios (in the village). You will be asked to match three choices in order to convince him to take down the body. Pick a different god's response after the first dialogue choice, and Agrios will refuse to take the body down. Keep making the wrong choices and you'll build dialogue choices for all the gods. These options satisfy the gods' dialogue quotas. By doing this you will easily be able to get Apollo's 75 choice deed.