Explanation
The option for BIND that is required in the global options to disable recursive queries on the DNS server by default is recursion no;. This option tells the server not to provide recursive query behavior to any client, unless overridden by a view or a zone statement. Recursive queries are queries that the server will try to resolve by contacting other servers if it does not have the answer in its cache or zones. Disabling recursive queries can improve the security and performance of the server, especially if it is only meant to serve authoritative zones123 References:
BIND: Stop Recursion DNS Under Linux / UNIX - nixCraft
How to Disable External DNS Recursion in BIND? | DeviceTests
bind - How to Disable External DNS recursion? - Ask Ubuntu