Answer:
A.) Restate the topic again using synonyms or similar words
Step-by-step explanation:
A.) is correct because the point of a conclusion is to wrap up the essay/paragraph--remind people what they're reading about. It should tie the previous information in with the main topic
B.) is incorrect because if you are concluding something, you do not want to introduce more information
C.) is incorrect because you do not want to duplicate sentences
D.) is incorrect because essays should be logical and stay on topic