English

An addendum is an addition or supplement to a document. The antonym would be a term indicating removal or reduction, such as 'Subtraction'. 'Detriment' means harm or damage, and 'Lessening' is close but less precise than 'Subtraction'. 'All of above' is incorrect because not all options are true antonyms.

The term 'brittle' describes a material or object that is hard but likely to break easily under stress. This matches the definition given in the question, making option A correct.

An accomplice is a person who helps another commit a crime, which directly answers the question. The other options do not relate to criminal assistance.

Option A correctly changes the direct speech into reported speech by shifting the tense from past simple to past perfect and changing the time expression 'yesterday' to 'the previous day'. This is the standard rule for reported speech when the reporting verb is in the past tense.

The correct preposition to use in the phrase 'I prefer tea ______ coffee' is 'to', making the sentence 'I prefer tea to coffee.' This is the standard grammatical construction for expressing preference between two things.

The word 'abstruse' means difficult to understand. Its antonyms include 'obvious', 'lucid', and 'plain', all of which imply clarity or ease of understanding. Therefore, 'All of these' is the correct choice as all options are valid antonyms.

The antonym of 'Accost' (to approach and address someone boldly or aggressively) is 'Avoid' (to keep away from or not approach). While 'Neglect' and 'Scorn' are negative actions, they do not directly oppose the meaning of 'Accost'. Therefore, 'Avoid' is the best antonym.

A person fluent in two languages is called bilingual. The other options are unrelated: bigot refers to intolerance, bigamy to marrying two people, and brittle means easily broken.

When converting direct speech to reported speech, the pronoun 'I' changes to 'he' to match the subject, and the verb tense shifts from present 'need' to past 'needed' to reflect the past reporting.

The word 'abject' means extremely bad or degrading. Its antonyms include 'commendable' (praiseworthy), 'exalted' (highly respected), and 'excellent' (of high quality), so all options A, B, and C are correct antonyms, making 'All of above' the correct choice.