Answer:
A. To inform the reader about what it is like to attend Explorer's Camp, the author uses a chronological structure that describes a typical day's activities.
Step-by-step explanation:
The organizational structure of the passage supports the author's purpose by "informing the reader about what it is like to attend Explorer's Camp, the author uses a chronological structure that describes a typical day's activities."
From the passage, it's clear that the author uses chronological structure order to show how the day's activities are in the Explorer's Camp for campers. Each activity starts with registration for campers and after that they are taking for hiking. Then what follows is lunch at picnic tables and they are taught how to identify animal tracks. At evening, they make tent and build a campfire.
Option A is the correct answer.