Which of the following can induce seismicity?

Inducing seismicity refers to the process through which human activities or natural phenomena trigger the occurrence of earthquakes. The correct answer focuses on the disposal of liquid waste in deep injection wells, which is known to induce seismic events. When fluids are injected into deep subsurface formations, they can increase pore pressure within the rock. This rise in pore pressure can reduce the friction along faults and allow for the movement of geological materials that may lead to an earthquake.

Specifically, this practice can create an environment where existing faults, which might not normally be activated, become unstable because the increased pressure changes the stress conditions in the Earth's crust. This has been documented in various cases, particularly associated with hydraulic fracturing (fracking) and wastewater disposal wells.

Some of the other options, while they can influence geological processes, typically do not lead to induced seismicity in the same direct manner. For example, high tides and heavy rainfall may affect surface conditions and could lead to other types of geological phenomena, but they do not directly trigger seismic activity in the same way as fluid injection does. Forest fires, although they can cause changes in the landscape, do not have a direct link to inducing earthquakes.