What type of words are often confused with contractions?

Possessive words

Explanation:

Possessive words utilize apostrophes to show possession.  So it is the family's car, or the sister's friend.

Contractions also use apostrophes, but they combine two words into a shorter one, can't instead of can not, won't instead of will not, etc

answer; (d) i believe the best answer is ; ///people said that man could not fly, but in 1903, orville and wilbur wright made the first sustained powered flight in a heavier- than-air machine;