Final answer:
Student A uses the material more effectively because it is well-suited to being paraphrased, while Student B uses the material more effectively by combining quoted phrases and paraphrased ones.
Step-by-step explanation:
The subject of this question is English.
Student A uses the material more effectively because this material is well-suited to being paraphrased, and because A employs quotes in a choppy, hard-to-read manner.
Student B uses the material more effectively because the combination of quoted phrases with paraphrased ones allows readers to compare the original author's words with what the student has written.
Learn more about Comparing the effectiveness of using direct quotes and paraphrasing in writing