Answer:
B.) A book review may include the opinions of the person writing the review, while a summary should not include opinions.
Step-by-step explanation:
A review of something is giving your opinion about it and your thoughts on it. It is not objective and can be bias.
A summary of a text includes facts and main concepts. For example the main points of a text. It should not have opinions or feeling or thoughts on the text. It would be objective.