Question joshua

3.1 Boundaries - Semicolon vs period between independent clauses
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Joshua Hinson, director of the language revitalization program of the Chickasaw Nation in Oklahoma, helped produce the world’s first Indigenous-language instructional app, Chickasaw blank Chickasaw TV, in 2010; and a Rosetta Stone language course in Chickasaw, in 2015.

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

A.

Basic; in 2009, an online television network;

B.

Basic; in 2009, an online television network,

C.

Basic, in 2009; an online television network,

D.

Basic, in 2009, an online television network,