Between the two, is there even a need to make a choice?
Definitely choose escorting the merchant caravan!
In the past, most of Konoha's ninjas couldn't do without the missions issued by the nobles of the Land of Fire, but now with the establishment of Konoha's emerald mushroom industry, earning a substantial income daily and being self-sufficient, there are often not enough ninjas available, causing many merchant caravans to stay in Konoha for a period before they could depart.
Besides the emerald mushroom industry, there are also industries like the mushroom house, the recently booming scientific research industry, not to mention the departments of education, transportation, and security, all short of people. Hardly any idle ninjas are willing to take on the missions issued by the nobles of the Land of Fire.
Therefore, Haruno Sakura had such confidence.
