The correct answer is "el blue jean"
Step-by-step explanation:
"Pantalón" refers to the type of clothe you use to cover your legs. This means "Pantalón" is equivalent to the word in English "Pants", indeed both of them are written similarly. Additionally, as in English language pants or Pantalones (Plural of pantalón) can be of different types, this includes blue jeans o pantalón de mezclilla that in English is known as jeans; Pantalones cortos that in English are short-pants; among others. This implies the words that best fit "el pantalón" is "el blue jean" because "blue jeans" are a type of "pantalones" in Spanish. Also, other words are not related to clothes or pants.