💡 Detailed Explanation
The correct choice is '支度をします' (shitaku o shimasu - to prepare / get ready). '準備' (junbi) and '支度' (shitaku) both mean preparation or getting ready, and they are highly synonymous in the context of travel or meals. Sentence translation: 'I will prepare for the trip.' The other options are: '計画をします' (keikaku o shimasu - to make plans), '約束をします' (yakusoku o shimasu - to make a promise/appointment), and '案内をします' (annai o shimasu - to guide/show around).