Dominated by research on English language, “reading researchers have paid more attention to other writing systems and orthographies, for they believe that” writing systems affect reading.
(A) reading researchers have paid more attention to other writing systems and orthographies, for they believe that
(B) reading researchers have been paying more attention to other writing systems and orthographies, and they believe that
(C) reading research has been paying more attention to other writing systems and orthographies, and it believes that
(D) reading research has paid more attention to other writing systems and orthographies, and it is believed that