1 votes 1 votes The tracing model in Prolog describes program execution in terms of certain events. These events are call and exit call and fail call, exit and redo call, exit, redo and fail Mathematical Logic ugcnetcse-sep2013-paper3 + – Sanjay Sharma asked Jun 1, 2016 Sanjay Sharma 864 views answer comment Share Follow See 1 comment See all 1 1 comment reply Sanjay Sharma commented Jan 21, 2017 reply Follow Share ans is D 0 votes 0 votes Please log in or register to add a comment.