volcano:lava::geyser:_____a.steam b.old faithful c.mountain d.magma

a.steam because what comes out of a volcano? lava! what comes out of a geyser? steam!

for analogies you just have to find the connection

steam

In this analogy, we are comparing a volcano to a geyser. To find the correct answer, we need to identify the relationship between the two pairs of terms.

A volcano is known for erupting and releasing lava, which is molten rock that flows from the volcano. In a similar way, we need to determine what comes out of a geyser, which will help us find the correct answer.

When a geyser erupts, it releases hot water and steam into the air. The main similarity between a volcano and a geyser is that both involve the release of something forcefully. Based on this, the correct answer would be option A, steam, as it is the most relevant choice that matches the analogy.