Answer:
La palabra "Amarillas" es llana o grave porque la sílaba tónica es la penúltima sílaba. No lleva tilde (acento ortográfico) porque es llana o grave y termina en 'n', 's' o vocal.
The word "Amarillas" is llana or grave because the tonic syllable is the penultimate syllable. It does not have an accent (spelling accent) because it is flat or grave and ends in 'n', 's' or vowel.
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