Recent analysis of 54598 Bienor—an outer solar system object orbiting the Sun between Saturn and Uranus—has determined its color to be gray, suggesting an icy composition. Such interpretations are ultimately __________ the object’s gray coloration may be an incidental effect of radiation, solar wind, or collisions with other objects rather than evidence of its physical makeup.
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Verbal·Standard English Conventions·Boundaries
mediumWhich choice completes the text so that it conforms to the conventions of Standard English?
A
speculative, though.
B
speculative, though:
C
speculative; though
D
speculative, though