Sometimes your challenge as a coach is not whether your team knows how to do the research but helping them determine whether they need to do it in the first place.
Try asking them “What kinds of things to do you need to know about _________ and ____________and__________?” Have them come up with a list of useful information. Then, as they collect information on each _________, they can fill in a grid. Not everything will fit and not all the answers will be available but if they have 20 key facts on __________ and just one on _____________it will pretty obvious where they need more research without you having to say a word.
Or, ask the team to list the different ways they could ________________. If the list is short, you can suggest that they do more research.
This may include aspects beyond the long-term solution. For example,
What do you need to know about prohibited substances?
What do you need to know about what can result in penalties?
Coaches should encourage teams to use sources other than the internet for research. In addition to exposing them to other ways of finding out information, use of the library is likely to be safer than the unmonitored sites they may reach online.