Answer: C) items are instead concealed in backpacks, pockets, and purses, which are much more accessible to students.
Explanation: an argument or claim is a statement assertion that something is true. A counterclaim is a statement or an idea that refutes the claim. In the given paragraph, the author's thesis statement is that the school has the right to search student lockers to keep things safe for everybody (because lockers can be containers for dangerous items), the counterclaim to this claim is that if a school makes unscheduled searches, the students will store the items in backpacks, pockets, and purses, which are much more accessible to them.