Final answer:
The correct Spanish word to complete the sentence is 'hablé'.
Step-by-step explanation:
The correct Spanish word to complete the sentence is hablé. In the sentence, 'Ayer yo hablé con mi madre por dos horas', the verb 'hablé' is in the first person singular form, indicating that 'I' spoke. It is in the past tense, which is appropriate because the sentence is referring to an action that occurred yesterday. The other options, 'hablaba', 'hablo', and 'hablan', are not correct forms for this sentence.
Learn more about Choosing the correct Spanish verb tense