
Explanation:

Box 1: Yes
For read access to the secondary region, configure your storage account to use read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS).
Box 2: No
Box 3: Yes
Box 4: Yes
Azure Cosmos DB supports multi-region writes.
Reference:
https://docs.microsoft.com/en-us/az ure/storage/common/storage-redundancy
https://manojchoudhar i.wordpress.com/2019/12/16/azure-cosmos-db-enable-multi-region-writes