Couple of thoughts as a MBC-
Backpack, snowshoe, or cross-country ski for at least 4 miles. To me this would require the Scout to hike a minimum of 4 miles total and stay the night carrying everything they need for that experience. Doesn't say anything about a tent, want to sleep outside, great. I would expect food, water, 10 essentials, sleeping materials, toiletries, etc to be carried for the duration of the trip. Out and back would only require 2 miles in and 2 miles out to meet this requirement.
Plan and carry out an overnight snow camping experience. Is there snow on the