Restrictive clauses are essential for the meaning of a sentence and are never separated from the rest of the sentence using commas, unlike the nonrestrictive ones.
The sentences that contain a restrictive clause are 1 and 3.
Because in sentence 1, The writer stated "That we found in the shed".
Also in sentence 3, The writer stated "That I grew up in".
These are important to in order to understand the whole sentence and cannot be deleted.
Good luck (:
Answer:
B is the answer to the topic sentence.
Answer: hippocampus; forebrain
Explanation: This is because the hippocampus is located in the forebrain section called the telencephalon and the hippocampus is responsible for the formation of long-term and spatial memories.