Final answer:
Conjunctions join sentences, while prepositions answer 'where', 'when', and 'how'
Step-by-step explanation:
Conjunctions join two sentences, while prepositions help answer the words 'where', 'when', and 'how'. In the list provided, the conjunction is 'or' and the prepositions are 'under', 'in', and 'at'.
Learn more about Parts of speech