Determine whether the phrase below is a sentence or a fragment. while claude sets up the bookshelves.

The author attributes papa's unforgivable behavior to which of the following? a. the painful memories connected with his 9-month ordeal in south dakota b. papa's increasing addiction to alcohol c. papa's unfulfilled need to be in charge of something and/or someone d. mama's emotional distance from papa

Read the sample student claim and the reasons listed for making this claim. claim: although many people argue that medical testing on animals is a violation of animal rights, the benefits it yields for society far outweigh any argument that can be made. reason #1: animal research has yielded both pain-relieving and life-saving drugs for humans. reason #2: laws prohibit scientists from using animal-based research in cases where non-animal testing would produce equally clear and valid results.

What is the central idea in this advice from branch rickey to jackie robinson?