Sarah on June 17 at 01:22AM
Why not A?
I cannot find support for (A) in the passage. The only time I could find clay being mentioned was on line 39, and even here I did not see support to believe clay would specifically be â€œan important constituent of many, if not all, drilling mudsâ€
Ravi on June 17 at 06:20PM
Griffin on December 2 at 12:47AM
Shunhe on January 3 at 02:09AM