HOTSPOT
You have a folder that you plan to share.
You need to configure security for the shared folder to meet the following requirements:
Members of a security group named Group1 must be able to modify permissions of files and folders.
Members of a security group named Group2 must be able to read files and folders only.
Members of a security group named Group3 must be able to take ownership of files.
What should you do? (To answer, select the appropriate options in the answer area.)
Answer: 
NTFS permission for group 1 should be modify, right?
yes I agree with sam here, group 1, modify.
Nice, came here for that anwer.
Answers are Correct because they clearly mentioned that Group1 need to “modify permissions of files and folders.” not the content of the folder or files. Full control option only can do the modify the permission of the files and folders.
The modify permission will allow your users to add, and delete folders and files within the folder that is within the share. If you give full access permission that user or group will now be able to give access to others.
Prasanthan is correct. Both Group1 and Group2 need Full Control, which grants the ability to modify permissions and take ownership.