Synonyms

Here, only option B comes close to the given sentence without adding any further errors. The other options either carry grammatical errors or change the meaning of the given sentence. Therefore B is the best answer.

Only option D comes close to the meaning of the given sentence in the most clear, grammatical error free manner. The other options are incorrect because they either carry some grammatical error or do not capture the meaning of the given sentence. So, D is the best answer.

Only option C comes close to the meaning of the given sentence in the most clear, grammatical error free manner. The other options are incorrect because they either carry some grammatical error or do not capture the meaning of the given sentence. So, C is the best answer.

Operation flood was a program which was started by National Dairy Development Board (NDDB) of India in 1970. It was the biggest dairy development program. Its main aim was to create a national movement to increase the production of milk. It made India one of the largest producers of milk and milk products, hence is also known as white revolution. Verghese Kurien, the then chairman of NDDB is considered as architect of white revolution. 

The term 'globalization' is a synonym for the term internationalization. Globalization can be defined as the growing interdependence of countries worldwide through increasing volume and variety of cross border transactions in goods and services and also through rapid diffusion of technology.

Selling is a narrow concept focused on converting products into cash, whereas marketing is a broad, long-term process focused on customer needs and satisfaction.

A synonym is a word with a similar meaning. 'Unaccustomed' means not familiar or unusual, which aligns with 'unusual'.

To purge means to rid an area or thing of unwanted elements, people, or feelings. Eliminated is the closest synonym, as it means to completely remove or get rid of something. Restored means to bring back, which is the opposite of purging.

Relevant means closely connected or appropriate to what is being done or considered. Pertinent is a direct synonym that also means applicable or relevant to a particular matter. Extraneous is the opposite, meaning irrelevant or unrelated.

A debate is a formal discussion on a particular topic in which opposing arguments are put forward. Discuss is the closest synonym, as both involve talking about a subject to reach a decision or exchange ideas. Contemplate means to think deeply, which is a solitary activity rather than an interactive exchange.

To tether means to tie an animal or object with a rope or chain so as to restrict its movement. Fasten is the closest synonym, as it means to attach or secure something firmly in place. Gallop is a horse's gait, and saddle is a seat for a rider, neither of which mean to tie down.

To expose means to make something visible by uncovering it or leaving it unprotected. Display is the closest synonym, as it means to show or make something visible to others. Conceal is the exact opposite of expose, meaning to hide.

Ludicrous describes something so foolish, unreasonable, or out of place as to be amusing. Ridiculous is a direct synonym that also means deserving or inviting mockery or derision. Insipid means lacking flavor or interest, which does not capture the absurdity of ludicrous.

While singular can refer to a single item, in a descriptive context it often means exceptionally good, unique, or unusual. Exceptional is the closest synonym, capturing this sense of being outstanding or out of the ordinary. Different is too broad, as something can be different without being singular or outstanding.

As a verb, to channel means to guide, direct, or point something along a particular route or path. Direct is the closest synonym, as it also means to control the operations or course of something. Irrigate means to supply water, which is a very specific type of channeling but not the general synonym.