reassurance

尽管我一再保证这个手术很安全，他依然很焦虑。

Despite my ___reassurance that the procedure was safe, he remained anxious.

医生平静的态度给焦虑的病人带来了巨大的安慰。

The doctor's calm manner offered great ___reassurance to the anxious patient.

孩子们经常从父母那里寻求关于他们安全的持续保证。

Children often seek constant ___reassurance from their parents about their safety.