HELP PL Which sentence uses formal language? I was blown away by this book I just read.

The wheel was likely invented during the Bronze Age.

The wheel wasn’t invented until 3500 B. C.

It seems weird that people used to live in caves.

The wheel was likely invented during the Bronze Age.

"I was blown away by this book I just read." seems like something you would say in an everyday conversation

"The wheel wasn’t invented until 3500 B.C." uses wasn’t, which is informal language

"It seems weird that people used to live in caves." again, seems like something you would say in an everyday conversation

"The wheel was likely invented during the Bronze Age." is more polite than the others, so this is the answer

you need to know what you have learned: )