response type as a single choice image

[jchough1]

So for the experimental design that I am working on, I want to run through and present a sequence of 300 images one by one under a set duration of time, and record if the user clicks the image (as well as the response time associated with it).  However, based on what I can see in the grammar reference page, as well as my own testing of the code, there is no response type that is suited for this purpose.  The closest option that I can think of would be to use the response type "choice", with the image that we wish to present as the response, but that would make the stimulus redundant, and the program forces me to have to create a second option besides the single image that I wish to present.  
Is there any way to achieve what I am looking to accomplish? 
Here is a link to the study we are referring to if there is still any confusion:
https://osf.io/preprints/africarxiv/q8k5w/