Final answer:
To conjugate 'pintar' in the third person singular form, we add the -a ending to the stem, resulting in 'pinta'.
Step-by-step explanation:
When conjugating the verb 'pintar' in the third person singular form, which corresponds to 'she' in English, we add the -a ending to the stem of the verb. Therefore, the correct conjugation in this sentence would be 'pinta'.
Learn more about Verb Conjugation