Choose the correct alternative to fill in the blank.
The police forces ________ an operation to trace out the kidnapped person.

Correct option is C

✔️ The correct option is (c) have launched.
Explanation: “Police forces” is a plural subject, requiring the auxiliary verb have. Since the action is completed recently, present perfect tense ( have + V3) is used.
Grammatical Rule Used:
Present Perfect Tense
· Structure: Subject + has/have + V3
· Plural subjects take have, and singular subjects take has.
Hindi Explanation:
✔️ Present Perfect Tense का प्रयोग तब किया जाता है जब कार्य अभी-अभी पूरा हुआ हो।
✔️ बहुवचन कर्ता के साथ “have + V3” और एकवचन के साथ “has + V3” प्रयोग होता है।
उदाहरण:
· The police have arrested the thief.
· Doctors have launched the operation.
❌ Meanings of the other options:
· (a) Had launch – Incorrect past perfect form; should be "had launched".
· (b) Have launch – Wrong use of base verb.
· (d) Has launched – Wrong auxiliary for plural subject.