What compound word means imprint of a foot

Which word best describes the tone of "will we ever grow organs? "

What logical prediction can be made from this passage?

Select the dangling modifier in the paragraph. yesterday was a rough day. running for the bus, the rain began to pour. then, at guitar lessons, i had to play a song i hadn’t practiced. while walking home, i turned my ankle. my swollen ankle caused me to limp.