Explanation:

Only statements 2&3 are correct.

• Niger, officially the Republic of Niger, is a landlocked sub-Saharan country in western Africa.

• Bordering Countries:  It is bounded on the northwest by Algeria, on the northeast by Libya, on the east by Chad, on the south by Nigeria and Benin, and on the west by Burkina Faso and Mali. 

• The country takes its name from the Niger River, which flows through the southwestern part of its territory.

• Capital:  Niamey

Languages

• The official language of Niger is French, due to its colonial history.

• The main national languages are Arabic, Djerma-Sonhraï, Gourmantchéma, Hausa, Kanouri, Fulfuldé, Tamacheq and Toubou.

• Relief: It tends to monotony in its features, is intersected by numerous depressions, and is dominated by arid highlands in the north.

Independence

• Niger gained independencefrom French colonial rule on August 3, 1960.

• Prior to independence, it was a part of French West Africa.

Political System

• It is a semi-presidential republic with a multi-party system.

• The President is the head of state and holds significant executive powers.

• The Prime Ministeris the head of government and is appointed by the president.

Hence option 2nd is correct.