Final answer:
The correct phrase described in the sentence is Saludos cordiales. This phrase translates to 'best regards' in English and is commonly used in informal letters.
Step-by-step explanation:
The correct phrase described in the sentence is Saludos cordiales. This phrase translates to 'best regards' in English and is commonly used in informal letters. It is a polite and friendly way to conclude a letter. Other options in the question such as 'Estimado señor' (Dear sir), 'De mi consideración' (Yours sincerely), and 'Con cariño' (With love) are not suitable for informal letters.
Learn more about Saludos cordiales in informal letters