Select the participle that correctly condenses the active relative clause:

Regulations ________ the disposal of toxic industrial effluents must be enforced without administrative exceptions.

(Original: Regulations which govern the disposal...)

Answer and explanation

Correct answer: A. governing

Answer: governing. Why not the others: 'governed' is a passive participle that would mean someone else governs the regulations; 'to govern' expresses future purpose rather than a defining general function; 'having governed' implies a completed past action.
  1. Step 1: Identify the relationship: the regulations actively govern disposal ('Regulations which govern...').
  2. Step 2: An active relative clause describing a general truth or continuous state reduces to an active present participle: 'governing'.

Practise more Participle Clauses, Non-Finite Verb Forms, and Modifier Placement.

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