Suppose a later and more reliable measurement gives 7.3 /gcm3 for the density of the same alloy. Decide which of the earlier measurements was the most accurate, and which was the most precise.

The answer is letter c

What do you mean by that? like the contents? the thc level?

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.