This is the 3722nd most frequent Russian word.
утверждала
"Utverzhdala" means "asserted" or "claimed."
In this sentence, 'утверждала' indicates that she consistently expressed her opinion or belief about the benefits of sunlight.
Она всегда утверждала, что солнце полезно для здоровья.
She always asserted that the sun is beneficial for health.
Here, 'утверждала' is used to describe the action of formally validating or affirming the correctness of the work.
Учитель утверждала правильность выполнения домашнего задания.
The teacher confirmed the correctness of the homework.
In this context, 'утверждала' means to formally approve or sanction the plan in a professional setting.