Read this excerpt from a book about machines.

This book is divided into six parts. Each has information about one of the six types of machines: the wheel and axle (it changed civilization!); the inclined plane (those ramps!); the wedge; the lever; the pulley; and the screw (yes, it’s a simple machine). Each part includes some simple examples along with some of the complex structures that I have designed using one or more of these simple machines.

What text feature might include this passage?

references
introduction
acknowledgements
advantages and disadvantages

a pirate walks into a bar with a steering wheel sticking out of his pants.

bartender: isn't that uncomfortable?

pirate: arrgh! it's drivin' me nuts!

ok so like i went to wiki and looked up the (constitution x new "hammystan")and it showed me the picture it highlights new hampshire and says first and second session and than it says that they hit up the u.s and was like "ey dude that paper u sent us was adopted it bro thx" xd syays it all on wiki/the pic

i dont really like reading so i guess other people might not like reading either so   imma put the answer in bold italics

the narrator is a first person, participant one, who describes in the simple past tense important and difficult events in his earlier life. he also provides temporal markers as the month (january) and the time (12: 30 pm). finally the account of his experience is very detailed, to the extent that a participant narrator would talk the same way about his experiences. a good example of such detail is the mention of the “bovril ration” which historically was a native american food adopted by european explorers in arctic and antarctic regions due to its high level of calories.