Based on the output of the function for the inputs "dog", "cat", and "apple", it seems that the function is not selective for any specific concept. The output values are very low, indicating a low association with any particular concept. It is possible that the function implemented by f(x) is performing some sort of random or uniform scoring across the input words, rather than being selective for specific concepts. However, further testing with a larger variety of inputs is recommended to confirm this hypothesis.