Question

multiple-choice question
volcanoes are ____ that open to the hot interior of our planet.
vents
mountains
holes
hills

Explanation:

In geology (a subfield of Natural Science, specifically Earth Science), volcanoes are defined as vents (openings) that allow magma, gases, etc., to escape from the Earth's hot interior. "Mountains" describes their landform appearance but not their functional opening; "holes" and "hills" are inaccurate descriptions for their role in connecting to the Earth's interior. So the correct term is "vents".

Answer:

A. vents