Are you in A (aperture), S (shutter) or M (manual) exposure modes? If you are in A or P or a scene mode, many options are not available, as those modes let the camera decide for you. You may need also to check the metering mode. Spot metering for example may limit your choices as well.

Those options probably are only enabled if you are in Aperture or Shutter priority, or full Manual exposure modes. If you are in full Auto or Program mode, or a scene mode, many options are not available, as those modes let the camera decide for you. You may need also to check the metering mode. Spot metering for example may limit your choices as well.