In the question below, three sentences are given with a part highlighted in bold. From the options, choose the phrase that can replace the highlighted part in all three sentences to make the sentence grammatically and contextually correct. 1. Political tensions had brought about social instability in the country. 2. The colonial powers had sowed the seeds of communalism in India. 3. The police said that it was the faulty wiring that had led to the fire in the office.