Identify the logical fallacy demonstrated in each excerpt. false dilemma

false analogy

ad hominem

red herring

a. the scene is structured as a dialogue between two characters in their own informal language.

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

where is the writing? (so i can answer)

we would need to be able to read the passage in question to determine which factor allowed david believe he could defeat goliath. post the passage, and i'd love to out.