Which sentence contains correct parallel structure?

my favorite camping activities are to fish, hiking, and to swim.

my favorite camping activities are fishing, hiking, and swimming.

my favorite camping activities are fishing, going on a hike, and swimming.

my favorite camping activities are going fishing, to hike, and swim

The answer is third sentence

Explanation:

The activity that you do must include +ing

honestly you should not write it the word placement is not right and this does not sound right so i think you should write it this way. the life lessons i refused to learn, taught me the hard way this sounds way better you should try it! hope this is very !

his face was as red as an