Question

select the correct answer.
which word best completes this sentence?
limpio la casa todos los días ______ tengo una alergia al polvo.
a. cuando
b. si
c. porque
d. pero

Explanation:

To solve this, we analyze the relationship between the two clauses: "Limpio la casa todos los días" (I clean the house every day) and "tengo una alergia al polvo" (I have a dust allergy). The second clause explains the reason for the first, so we need a conjunction meaning "because".

• Option A "cuando" means "when" (time - not reason).
• Option B "si" means "if" (condition - not reason).
• Option C "porque" means "because" (matches the reason relationship).
• Option D "pero" means "but" (contrast - not reason).

Answer:

C. porque