Questions & Answers about La posición cambió.
Because posición is a feminine noun in Spanish, so it takes the feminine singular article la.
- la posición
- not el posición
This is something you usually just learn together with the noun: la posición.
Spanish uses accent marks to show which syllable is stressed when it does not follow the default stress pattern.
posición is stressed on the last syllable:
po-si-CIÓN
Words ending in -n, -s, or a vowel are normally stressed on the second-to-last syllable, so posición needs the written accent to show that the stress is different.