Explanation

Unfortunately, the news was not sent in time

Starting the sentence with "Unfortunately" clearly expresses the regret.

The placement of "unfortunately" at the beginning is natural and emphasizes the tone.

Other options have awkward or less natural word order.

Explanation

Explanation

Oman has named Haitham bin Tariq Al Said as the country's new ruler following the death of his cousin Sultan Qaboos bin Said Al Said

Explanation

China has powered up its nuclear fusion reactor for the first time, in a step forward for technology which would ultimately provide a powerful and limitless source of clean energy.

The HL-2M Tokamak reactor in Chengdu, Sichuan province – more than 10 times hotter than the sun’s core.

Explanation

ü  Sadiq al-Mahdi was Sudan’s last democratically elected prime minister.

ü  He died of COVID-19 in the United Arab Emirates on 26 November 2020.

ü  He was 84 years old.

Explanation

The first time NASA has grown radishes on the orbiting laboratory in the APH.

NASA selected radishes because they are well understood by scientists and reach maturity in just 27 days.

Explanation

The train route so far links the Iranian city of Khaf with the Afghan town of Rozanak about 150 KM.

The $75 million project began in 2007, with Iran funding.

Inauguration Date: December 10, 2020

Explanation

Sixth Arab League member to normalize ties with Israel

1.          Morocco

2.          UAE

3.          Bahrain

4.          Sudan

5.          Egypt

6.          Jordan

Explanation

The meeting was held in New Delhi in a virtual mode In November-2020

Explanation

China has claimed it to be the world's first light-based quantum computer.