Scout Ahead https://www.scoutahead.org/plans/railroading-merit-badge/questions

Which of this applies to you?

Answering these takes the parts that are not for you out of Railroading Merit Badge. Nothing is required, nothing is kept on the server, and nothing is ever hidden because a question went unanswered. A step that might apply to you stays on the list and is marked.

Requirement 1: which three of the four?

THREE of four, so you drop exactly one. All four are desk work and none needs anything bought or visited, which makes this the smallest decision on the badge. Pick by what you want to be able to talk about afterwards: freight operations, one real railroad, rolling stock, or how a locomotive works.

Requirement 3: departments, opportunities, industries or an interview?

ONE of four. Three are reading. The fourth is an interview with somebody employed in the rail industry, and it needs your parent or guardian's AND your counselor's approval before you arrange it, so it is the only option here with a lead time.

Requirement 7: Model Railroading or Railfanning?

The only requirement on this badge that costs anything, and the two names mislead. Option A offers three things needing nothing but a pencil and a search. Option B has two of its four requiring bought tickets. Both need your parent or guardian's and your counselor's approval before you start, and both then ask for TWO choices.

Requirement 7, Option A only: which two of the eight?

Answer this only if you chose Option A. Two of eight, and the range of cost is enormous. Drawing a layout, finding four websites and explaining direct current against digital command control need nothing bought. Building a layout with ballast, scenery and electrics is the largest single piece of work on the badge. Choices 5 and 6 combine.

Requirement 7, Option B only: which two of the four?

Answer this only if you chose Option B. Two of four, and two of the four require buying tickets. The cheapest honest pair is the museum visit and the preservation group, which is also the pair most likely to lead somewhere afterwards.