Step 1: Approach:
We first use the pair that is easiest. Then we remove options that break it.
Step 2: Use speed endurance:
Speed endurance is the fastest effort in the list. So it can only last a very short time, which is up to 45 seconds. This makes A-III.
Options 1 and 2 say A-I, so both go out.
Step 3: Choose between options 3 and 4:
Only options 3 and 4 remain. They differ on B, C and D. A slow continuous run is a long steady run, so it fits not less than 30 minutes (IV). Option 3 gives B-II, so it fails.
Step 4: Confirm option 4:
Option 4 then gives C-I (fast continuous, at least 20 minutes) and D-II (variable pace, 15 minutes to 1 hour). All four pairs are consistent.
Final Answer:
\[\boxed{\text{Option 4: A-III, B-IV, C-I, D-II}}\]