To identify a possible base \( b \) of a logarithmic function, we need to consider the properties of logarithms. The base \( b \) must be a positive number that is not equal to 1. This is because logarithms are defined with bases greater than 0 and not equal to 1.
From the provided options:
- \( b = 14 \) (valid, as it is positive and not equal to 1)
- \( b = \frac{1}{4} \) (valid, as it is positive and not equal to 1)
- \( b = -4 \) (invalid, as it's negative)
- \( b = 0 \) (invalid, as logarithm cannot have a base of 0)
- \( b = 4 \) (valid, as it is positive and not equal to 1)
From the valid choices, we can conclude that possible bases are \( b = 14 \), \( b = \frac{1}{4} \), and \( b = 4 \). However, when looking at typical logarithmic functions, values greater than 1 are most common, making \( b = 4 \) a strong candidate.
Thus, the possible base \( b \) for the logarithmic function could be:
b = 4.