💡 Detailed Explanation
The correct choice is 'くすり' (medicine). Sentence translation: 'Because I had a fever yesterday, I went to the hospital and received medicine.' Receiving medicine ('薬をもらう') is the logical consequence of visiting a hospital due to a fever. 'きっぷ' (ticket), 'にもつ' (baggage/package), and 'おかね' (money) are contextually inappropriate.