Final answer:
The correct preterite form of the verb 'leer' is 'leí'.
Step-by-step explanation:
The correct preterite form of the verb 'leer' to fill in the blank in the sentence is option A, 'leí'. The sentence should read 'En el periódico de ayer, yo leí que Carlos Santana está de gira por nuestra ciudad.'
Learn more about Spanish verb conjugation