The term ‘Digital Single Market Strategy’ seen in the news refers to

The Digital Single Market (DSM) Strategy refers to a policy initiated by the European Union (EU).

The Digital Single Market is a part of the Digital Agenda for Europe 2020 program of the EU, which is an initiative under the Europe 2020 strategy.

The three pillars of the European Commission's strategy are:

1. Access to online products and services.
2. Conditions for digital networks and services to grow and thrive.
3. Growth of the European digital economy.

Therefore, the correct answer is (c) EU.

Sources:

• European Commission - Digital Single Market