Transitions are used in speeches for the purpose of:a. accommodating the needs of an uninformed or uneducated audience.b. clarifying the meanings of unfamiliar terms, concepts, and processes.c. sustaining the attention of an audience that might be uninterested.d. helping listeners understand how the points are related to each other.e. demonstrating the knowledge, credibility and skill of the speaker.

The correct option is letter d. helping listeners understand how the points are related to each other.

Explanation:

In writing and speech writing, transitions are words or phrases used to connect ideas. In public speaking, transitions are important to unite the presentation as a whole by showing how all ideas and details presented are interconnected. Without the proper transitions, the audience may see the speech as broken, as if the topics have nothing to do with one another. Therefore, we can safely say that the purpose of transitions in speeches is to help listeners understand how the points are related to each other. An example of problem-solution transition is as follows:

"Now that we've seen how the excessive use of the mother-tongue affects ESL learning, I would like to show some solutions that may help reduce its use in class."