English

The word "the" is widely recognized as the most common English word globally, used frequently as a definite article in sentences.

Telepathy is the communication of impressions from one mind to another without using the known senses, making it the correct one-word substitute for the given description.

The antonym of 'minor' is 'major' because 'minor' means lesser or smaller in importance, and 'major' means greater or more important.

The correct preposition to use with 'sneer' in this context is 'at'. The phrase 'sneer at' means to mock or show contempt towards someone or something, making option D the correct choice.

The idiom "a bolt from the blue" refers to something sudden and unexpected, typically an unpleasant event or misfortune. Therefore, option B, "Unexpected misfortune," correctly captures the meaning.

The word 'assiduous' means showing great care, attention, and diligence. Its antonym is 'sluggish,' which means slow or lacking energy, making option B correct. The other options are synonyms or unrelated.

Polyandry is the practice where a woman has more than one husband simultaneously, which matches option B. Option A describes polygyny, and option C is unrelated.

The word 'hypocritical' means pretending to have virtues or beliefs that one does not actually possess. Its antonym is 'sincere,' which means genuine and honest, making option B the correct choice.

The word 'callow' means inexperienced or immature. Its antonym is 'veteran,' which means experienced or skilled. Therefore, 'veteran' is the correct opposite of 'callow.'

The word 'abase' means to humiliate or degrade someone. Among the options, 'humiliate' is the correct synonym, while the others have unrelated meanings.