Nhận biết (M1)

Zygomorphic (bilaterally symmetric) flowers remain open and functional on average 1.1 days longer than actinomorphic (radially symmetric) flowers do. Ruby E. Stephens and colleagues claim that this extended period could be __________ the relatively small pool of potential pollinators available to zygomorphic flowers and the greater chance at successful pollination that remaining open affords them.

Which choice completes the text with the most logical and precise word or phrase?

• A.

  attributed to

• B.

  converted by

• C.

  analogous to

• D.

  magnified by