Verified answer

The direct source of information about the interior of the earth is volcanoes. (option B)

• The volcanic eruption throws out magma onto the surface of the Earth which acts as a direct source of information as it is available for further study.
• when the magma solidifies it turns into different rocks (igneous, sedimentary and metamorphic rocks) according to the temperature and pressure that acted upon it.
• By studying these rocks we can get information about Earth's interior.
• Earthquake waves, gravitational force and Earth's magnetism are indirect sources.
• The study of earthquake waves which is also called seismic waves give information about the different interior layers of the Earth.
• That's why, volcanoes is the correct answer to this question.

Explanation:

option B

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater.