Upon a deep psychological and theoretical analysis of Howard Gardner's Theory of Multiple Intelligences, which of the following statements provides the most authentic scientific explanation of the specific cognitive domains and neurological functioning of 'Naturalistic Intelligence' and 'Existentialist Intelligence' as propounded by Gardner?

Understanding Gardner's Multiple Intelligences

According to Howard Gardner's Theory of Multiple Intelligences, intelligence is not a single, unified general set of abilities, but rather consists of multiple independent mental capacities.

• Naturalist Intelligence: Provides individuals with the ability to sensitively connect with and classify various elements of nature, flora, fauna, and the environment.
• Existential Intelligence: Relates to the capacity to ponder fundamental questions of human existence, such as the meaning of life, death, and cosmic mysteries.

For further reading in this context, you can refer to the Wikipedia reference.