Nhận biết (M1)

Seismologist Alfonso Okinakis sits on the review board tasked with adding new sites to the Hawaii Register of Historic Places, which includes Grove Farm, established in 1854, and the Keauhou Bird, a section of Biore site along the north coast. Okinawan doesn't make such decisions singlehandedly, _________ historical designations must be approved by a group of nine other experts.

Which choice completes the text so that it conforms to the conventions of Standard English?

• A.

  however and all

• B.

  however. All

• C.

  however all

• D.

  however, all