Step 1: Plan.
Start with the pairs that are easiest to see. Then use the options to settle the rest.
Step 2: Fix the easiest pairs.
Security goes with choosing a password wisely, because passwords guard your account. So B-I. Ethical goes with no copyright violation, because ethics means respecting the rules and the owner's rights. So D-III.
Step 3: Use the options to cut down.
Options that have B-II or B-III do not fit B-I. Option 1 has B-II, option 2 has B-III and option 4 has B-IV. Only option 3 has B-I.
Step 4: Check the left-over pairs.
In option 3 the remaining pairs are A-II and C-IV. Credibility with cautious commenting is sensible, since careless comments hurt trust. Reliability with thinking before uploading is also sensible, since uploaded content stays and others depend on it.
Step 5: Check D in option 3.
Option 3 also has D-III, which matches the pair fixed earlier.
Step 6: Decide.
Only option 3 fits all four pairs.
Step 7: Extra check.
As a last test, read each pair aloud as a sentence. Security means: choose your password wisely. Ethical means: no copyright violation. Credibility means: be cautious while making comments. Reliability means: think before you upload anything. Every sentence sounds natural, so the matching holds.
Final Answer:
The matching A-II, B-I, C-IV, D-III is option 3.
\[ \boxed{\text{Option 3}} \]