We are given two statements and two conclusions. Let's evaluate the validity of each conclusion based on the statements alone.
Step 1: Analyze Conclusion I — “Some balls are red in colour”
This conclusion directly restates the first statement: “Some balls are red in colour.”
Since this is explicitly stated in the statements, Conclusion I logically follows.
Step 2: Analyze Conclusion II — “Some boxes are not empty”
This is the opposite of the second statement, which says “All boxes are empty.”
If all boxes are empty, then no box is non-empty.
So, the statement "Some boxes are not empty" contradicts the given information.
Therefore, Conclusion II does not logically follow.
Hence, only Conclusion I follows.