Which sentence from the excerpt is foreshadowing and why

Sentence 2

Explanation:

It talks about Doodle towards the end which I am assuming is a bird.

Sentence 2 discusses the song of the oriole and it leads up to talking about Doodle.  

D) Sentence 4 , because it foreshadows that Doodle is no longer present in the narrator's life.

Explanation:

The sentence hints at what the story is about, remembering Doodle, before they died.

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.

in "people in peace, not profit and war" chrisholm uses inductive reasoning for her argument against defense spending by stating that the new administration, like most americans, wanted to invest in social objectives, so they must not want to prioritize defense spending. mr. nixon said "we can delay no longer in launching new approaches to the problem that beset them", but chrisholm points out that the programs were delayed anyways.