Answer:
The correct answer is - remembering new information.
Explanation:
Hippocampus is a curved structure, small in size that is essential for the limbic system. These curved structure are two in the number. The hippocampus actually helps in making new memories and new emotion forming.
Survivors of hippocampal brain tumors have a problem remembering new things or forming new memories. It is considered as it is due to the reduced size of the hippocampus or because of radiation used in treatment.
Thus, the correct answer is - remembering new things.