The correct answer is C. The dawn chorus of robins
Explanation:
In speeches and texts, the term tone refers to the author has about the subject or theme the author is speaking or writing about, this tone is usually expressed by the choice of words the author makes to refer to a situation or topic. Because of this depending on the author and the topic he or she is addressing the tone is different.
In the excerpt presented which belongs to "Silent Spring" a book written by Rachel Carson that explores the negative effects of the pesticides on the environment, the author aims at explaining the way spring was full of sounds of different birds but those have disappeared leading to a negative spring. Considering the author attitude is negative towards the situation of the silent spring but positive towards the past the phrase with the most positive tone is "the dawn chorus of robins" as this phrase refers to the past in which the spring had a lot of voices including those of the robins, a type of bird, also, this is only phrase depicting a positive aspect rather than the silent spring the author seems as negative.
Answer:
B). I started to do voluntary work three years ago.
Explanation:
The second option correctly transforms the given sentence into the past using past indefinite tense. Past indefinite tense is employed to denote the actions that occurred or happened at a particular point of time in the past('started to do voluntary work three years ago'). It is framed using 'subject + V2 + object.' While present perfect tense is employed to denote an action that began in past but still progressed till now. Such actions carry their effects in the present which cannot be possible in the given context as the action took place entirely in the past. Thus, <u>option B</u> is the correct answer.
