Final answer:
The correct answer is B. estaba. The verb estar is used to indicate a temporary condition or state. In this context, B. was the correct past tense form of estar.
Step-by-step explanation:
The correct answer is B. estaba.
The verb estar means 'to be' in English and is used to indicate a temporary condition or state. In the given sentence, 'Esta mañana mi madre' means 'This morning, my mother' in English. Since it is referring to a temporary condition (being tired in the morning), the past tense form of estar is used, which is estaba (he/she/it was).
Other options:
- A. estaré - This is the future tense form of estar, which means 'I will be'. It is not correct in the given context as it is referring to the present/morning.
- C. estás - This is the present tense form of estar, which means 'you are'. It is not correct in the given context as it is referring to the third person (my mother).
- D. estuvo - This is the past tense form of estar, which means 'he/she/it was'. While it is also a past tense form of estar, it is not the correct form for the given context as it is referring to the past (this morning is the present).
Learn more about Verb estar in Spanish