The stem-changing verb might she uses to explain that she starts her routine is "comenzar." Comenzar in English means to start, to begin.
In this case, Valeria's routine starts one hour before 7:30.
<h3>Explanation and stem-changing verbs.</h3>
The sentence in Spanish is <em>"Valeria tiene que llegar a la escuela a las siete y media de la mañana . Pero su rutina tiene que comenzar una hora antes."</em>
Translation in English: <em>"Valeria has to arrive at school at seven thirty in the morning, but her routine has to start one hour before. "</em>
Stem-changing verbs tend to be irregular and in the infinitive form.
Infinitive form in Spanish means that the verb ends with: "ar," "er," "ir."
For example: "lanzar" (to throw); "correr" (to run); "dormir" (to sleep).
In the case of this question, the verb is "comenzar," (to start) because Valeia has to start her day early in the morning before she is ready to attend school,
We conclude that the correct verb is "comenzar," which means to begin something. It is the stem-changing-verb Valeria uses to explain that she starts her routine early in the morning,
Learn more about stem-changing verbs here:
brainly.com/question/22013180
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