What are the three general groupings of filters?

In electronics, filters are fundamentally categorized by how they handle different bands of frequencies. The three primary functional groupings are high-pass (which attenuates low frequencies), low-pass (which attenuates high frequencies), and band-pass (which only allows a specific range of frequencies through). The distractor options describe different electronic concepts entirely. Hartley, Colpitts, and Pierce are types of oscillator circuits, not filters. Inductive, capacitive, and resistive refer to fundamental component properties used to build circuits, rather than the functional groupings of the filters themselves.