We can evaluate log_10^3 using the definition of logarithms:
log_b(x) = y if and only if b^y = x
In this case, we have log_10^3, which means that 10 is the base and 3 is the argument. We want to find the exponent y such that 10^y = 3.
However, there is no integer exponent that satisfies this equation, since 10^1 = 10 and 10^2 = 100 are both greater than 3, while 10^0 = 1 is less than 3.
Therefore, the value of log_10^3 is not an integer and cannot be expressed in the form of one of the answer choices. We can, however, approximate the value of log_10^3 as approximately 0.477, using a calculator or logarithm table.