What is the purpose of the transitions “One theory” and “other proposals” in this excerpt?

Question

(1 point)
Responses

to group together explanations to the same question
to group together explanations to the same question

to draw a contrast between two ideas
to draw a contrast between two ideas

to show a cause/effect relationship
to show a cause/effect relationship

to point out a specific example of a general phenomenon

Answer 1

The purpose of the transitions "One theory" and "other proposals" in the excerpt is to group together explanations to the same question.