Correct Answer : Option (C) - Mandarin Chinese

English is the largest language in the world, if you count both native and non-native speakers. If you count only native speakers, Mandarin Chinese is the largest.

Correct Answer : Option (C) - Germany and Austria

State funding of elections takes place in Germany and Austria.

Correct Answer : Option (D) - NOTS

The state of California uses a mechanism known as NOTS. NOTS stands for (Negligent Operator Treatment System).

Correct Answer : Option (B) - Southen Ocean

Correct Answer : Option (A) - Due to accumulation of sediments in a geosyncline

Due to accumulation of sediments in a geosyncline fold mountains have enormous thickness of sedimentary rocks. The plains were folded into mountains and The sediments were folded into recumbent and nappe.

Correct Answer : Option (B) - The Adriatic

Ionian Sea, Latin Mare Ionium, Italian Mare Ionio, part of the Mediterranean Sea, lying between Albania (northeast), Greece (east), Sicily (southwest), and Italy (west and northwest). Though considered by ancient authors to be part of the Adriatic Sea, the Ionian Sea is now seen as a separate body of water. 

Correct Answer : Option (C) - lava

Magma that reaches the earth's surface and then solidifies is known as the lava.

Correct Answer : Option (D) - North Pacific Ocean

The oceanic current named as 'Kuroshio - Kurile and Alaskan' are located in North Pacific Ocean.

Correct Answer : Option (D) - China

Until 2006 South Africa was the world's largest gold producer. In 2007 increasing production from other countries and declining production from South Africa meant that China became the largest producer, although no country has approached the scale of South Africa's period of peak production during the late 1960s and early 1970s. In 1970 South Africa produced 995 tonnes or 32 million ounces of gold, two-thirds of the world's production of 47.5 million ounces.

Correct Answer : Option (A) - California