question: Given the fact "friction causes the temperature of an object to increase", what is the answer to "To warm yourself up on a chilly day"

OPTIONS:
- rub your palms together
- wear short sleeve shirts
- go without any socks
- stand still in one place

answer: rub your palms together

question: Given the fact "An example of playing a musical instrument is strumming a guitar string", what is the answer to "You may be able to make musical instruments from"

OPTIONS:
- A paperclip
- air
- water
- grass

answer: A paperclip

question: Given the fact "a tree growing a tree-growth ring occurs once per year", what is the answer to "The outer casing of a tree expands how many times a year"

OPTIONS:
- 1000 times
- ten times
- once
- 100 times

answer: once

question: Given the fact "a bicycle contains screws", what is the answer to "Two wheeled conveyances are held together by"

OPTIONS:
- helically ridged pins
- tape
- glue
- gum

answer:
helically ridged pins