Multiple paths to goal, only need to select one

I have a situation where one of three resources is chosen by an external actor. Once they have chosen a resource a single path is followed for about two steps and then it joins back into the main flow. I could do it as a two-tier decision point ... the first tier indicates the topic, which then dictates which tier two resources are available and then use a decision step to select one of the resources. But in the interest of diagramming simplicity, that seems overcomplicated. Is there another way? I believe in BPMN it is an inclusive gateway (but I am not an expert on BPMN)

Let me write out the flow in specific in case that helps.

After some traffic generating activities (an initial process), a website visitor comes to the site interested in one of four topics (decision step one, Call them 1 2 3 4) By pursuing the interest they have chosen, there are some relevant resources and some irrelevant resources (Call them A B C D)
If a person selects 1, then resource A C and D is relevant.
If they select 2, then A and D are relevant
if they select 3 then B, C, and D are relevant. etc.

However, they only need to select one path to go forward, so if path 1 is chosen, then any one of 1A, 1C, and 1D is a complete path. They do not need to complete all three to be done to the next stage. I hope that helps a little in my application

Thanks for any help you can offer,
Corinne