Correct option is A
Statement
I: The police have increased vigilance during late night hours.
II: Incidents of petty crimes have reduced in the late night hours.
Now, let's evaluate the logical relationship between them:
So, The increase in police vigilance (Statement I) is likely to cause a reduction in petty crimes (Statement II) during late night hours.
Increased police vigilance would likely discourage petty crimes and make criminals less likely to commit crimes during these hours.
Therefore, the correct conclusion is:
Statement I is the likely cause and statement II is its likely effect.
Thus, correct option is (a).