The Ambassador country was in news recently for giving an affidavit in the Supreme Court of India and not honouring it?

The answer is A) Italy. The question is worded loosely, but it points to the Enrica Lexie case. In February 2012, two Italian marines on the Enrica Lexie fired on a fishing boat off the Kerala coast and killed two Indian fishermen. When the marines were allowed to go home on leave, the Italian Ambassador, Daniele Mancini, gave the Supreme Court of India a written assurance that they would return. Italy then refused to send them back in March 2013, which is the 'not honouring' part.

The other options have no such episode. Portugal, Sri Lanka and the USA were not the source of an affidavit before the Supreme Court in this matter.

Core concept: the jurisdiction question in cases involving foreign nationals on ships in Indian waters, and the limits of state undertakings before Indian courts. It links to the UNCLOS framework and India's maritime security and diplomacy, which matter for Mains GS-II and GS-III.

The jurisdiction dispute later went to arbitration under UNCLOS at The Hague. The tribunal's 2020 ruling went against India on criminal jurisdiction, so check the latest position if this comes up in Mains.

Trap: candidates often mix this with other 2013 diplomatic episodes or pick the USA because of the Devyani Khobragade case. That case involved a diplomat and an affidavit-free dispute, so it does not fit.