<prompt> The minimum intensity of stimulus applied for adequate time to produce a response is calledSubthreshold stimulusSuprathreshold stimulusRheobaseChronaxie  <response>: Rheobase R refers to the minimum intensity of stimulus which if applied for adequate time utilization time produces a response.Chronaxie C refers to the minimum duration for which the stimulus of double the rheobase intensity must be applied to produce a response. Ref: Indu Khurana Medical Physiology for Undergraduates, 1st ed, p 51 