Directions: Which of the following phrases (I), (II) and (III) given below the sentence should replace the emboldened phrase to make the sentence grammatically and contextually correct? Choose the best option among the five given alternatives that reflects the correct use of the phrase in the given sentence. If the sentence is correct as it is, mark (e) i.e., 'No correction required' as the answer.

The focus of the discussions were largely on global security which encompassed counterterrorism, radicalisation, drugs trafficking, and illegal arms smuggling, among others.
I. was mainly on global reliability
II. were predominantly on intercontinental safety
III. was, to a large extent, on worldwide security