Explanation

Explanation

The suitable preposition that fits grammatically in the blank is 'to'.

Hence, the sentence becomes: Do you know the solution to this problem?

Preposition of location: Example: at Jaya's house.

Explanation

'At' indicates specific time, location or position.

Hence it is the correct preposition to be used in the sentence.

Explanation

Broadway, New York City thoroughfare that traverses the length of Manhattan.

The term Broadway is virtually synonymous with American theatrical activity.

Explanation

Racism is the process by which systems and policies, actions and attitudes create inequitable opportunities and outcomes for people based on race.

Explanation

Explanation

Bonded labour is most common in brick kilns, carpet-weaving workshops, mining, agriculture and domestic work.

Explanation

igloo, temporary winter home or hunting-ground dwelling of Canadian and Greenland Inuit (Eskimos).

Explanation

The Goldsmid’s line (1871), which marks the border between present-day Pakistan and Iran.

A year earlier in 1872, Goldsmid headed a commission that negotiated a new boundary between Afghanistan and Persia - the Selstan frontier.

The line stretched from Banda to Kuh-i-Malik Siah and followed the Helmand River.

Explanation

The Baltic states or the Baltic countries is a geopolitical term encompassing Estonia, Latvia, and Lithuania.

All three countries are members of NATO, the European Union, the Eurozone, and the OECD.