Directions: Choose the sentence(s) that make(s) coherent sense grammatically. A. Paleontologists believe that fragments of a primate jawbone unearthed in Burma and estimated at 40 to 44 million years old provide evidence of a crucial step along the evolutionary path that led to human beings. B. Of all the possible disasters that threaten agriculture, the possibility of an adverse change in climate is, may be, the most difficult for analysis. C. Quasars, at billions of light years from earth the most distant observable objects in the universe, believed to be the cores of galaxies since collapsed. D. The selection was based less on the player's capability; more on his willingness to sign the contract.