What is the synonym of nasty?

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

The population of Mumbai(A)/is greater than(B)/in any city in USA.(C)/No error(D)

ANNEXURE 

Instruction: Choose the alternative which is an Adjective formed by adding a Suffix. 

Caution 

Direction: In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word as your answer.

COVENANT 

Direction: In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word as your answer.

Select the word which is similar in meaning to the word in capitals.
SUBVERT

Identify the best way to improve the Bold part of the given sentence. If there is no improvement required, select ‘no improvement’-

According to me, she is sick.

Direction: In the following passage, there are blanks each of which has been numbered. These numbers are printed below the passage and against each five words have been suggested, one of which fills the blanks appropriately.
 BRICS leaders are gathered in the Russian town of Ufa for the bloc’s annual summit, and Internet governance is high on their (1). The summit comes at a (2) juncture in India’s internet diplomacy. Last month in Buenos Aires, at a conference organised by the Internet Corporation for Assigned Names and Numbers (ICANN), IT minister Ravi Shankar Prasad offered an “Indian (3) for the Internet”. ICANN is the organisation that manages the Domain Name System, which serves as the (4) for all technical and commercial activity in cyberspace. In his recorded message, Mr. Prasad declared India would move away from state-led approaches to (5) the Internet, preferring instead a mechanism that co-opts the private sector and civil society into the policymaking process. India’s (6) of this model – called “multi-stakeholderism” – was followed at home by the launch of the “Digital India week”, which underlined the enormous political capital that the Narendra Modi government has (7) in technological solutions to governance. The Buenos Aires declaration, however, (8) stated New Delhi’s position: in Ufa, Prime Minister Narendra Modi and his delegation will be queried extensively by their interlocutors on the (9) cyber strategies India will (10).

Choose the correct option for the blank 3.