MCQ Practice English 📖 Since an in-house search failed to reveal the culprit, an outside investigation was 'instigated'. A carried out B discussed C initiated D requested Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousSeverity: NextSlangs in a language are usually 'ephemeral' in nature.