English

The sentence is a third conditional structure, which refers to a hypothetical past situation and its possible past result. Option A correctly completes the sentence with 'they would have understood the plot of the movie,' matching the conditional form.

The word 'Adamant' means refusing to be persuaded or to change one's mind, which is synonymous with 'Obstinate'. The other options do not convey the same meaning.

The phrasal verb 'give up' when used to mean 'stop doing something' is followed by a gerund (verb + ing form), not an infinitive. Therefore, the correct phrase is 'give up coming home late at night.' The option 'to come' is incorrect in this context because 'give up' does not take an infinitive to express quitting an activity. The phrase also contains a typo ('dacot'), which should be corrected for clarity, but it does not affect the grammatical choice.

The word "blatant" means something very obvious or conspicuous, often in a negative sense. Among the options, "Obvious" is the correct synonym. "Tactful" and "Tragic" have different meanings, and "None of these" is incorrect since "Obvious" fits.

The sentence requires the present perfect continuous tense to indicate an action that started in the past and is still continuing, which is correctly expressed by 'has been trying.'

The correct idiomatic expression is 'under the impression,' which means to believe something, often mistakenly. The phrase 'in the impression' is not used in English. Therefore, the correct preposition to use in the sentence is 'under.'

The word 'bleak' means cold, desolate, or lacking in warmth and cheer. The opposite would be 'bright,' which suggests light, warmth, and cheerfulness, making option C the correct antonym.

The phrase 'encountered death' is correct and idiomatic, meaning she nearly died. The other options do not fit grammatically or contextually: 'breathe' is a verb and does not fit after 'encountered'; 'unconscious' is an adjective and cannot be the object of 'encountered'; 'None of these' is incorrect since 'death' is correct.

Option A, "him being taken on," correctly uses the gerund phrase with the object pronoun "him" followed by the gerund "being" and the past participle "taken," which is grammatically correct in this context. Options B and C are ungrammatical, and D is incorrect since A is correct.

The correct phrase is "an hour's drive" because "hour" begins with a vowel sound, so the article "an" is used. Also, the possessive form "hour's" is correct to indicate the duration of the drive.