What does this symbol mean? ? it's 3 lines creating a circle with a straight line above it. it almost looks like a power on/off button.

Which statement would you identify as being correct? it is important to learn the etymology of every word in a text. it is important to understand the etymology of every word in a text. it is important to study the etymology of every word in a text. it is important to study the etymology of some words in a text.