Pillow lava is created:
a. really fast in the air
b. in the water
c. underground
d. on sandy beaches

b. In the water

Explanation:

Lava pillows form as hot lava flows into water and easily refreshes, producing long tubes of rock and bulbous rock pillows. Not only the oceans, but also glaciers surrounding volcanoes are located beneath pillow lavas. They are a classic geological sign that you once stood underwater.

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ń, wǒ shuō yīngyǔ, dàn wǒ huì shuō qítā yǔyán, rú xībānyá yǔ fǎyǔ yìdàlì yǔ hé pǔtōnghuà, suǒyǐ bùyào pànduàn, dànshì