Final answer:
The correct possessive adjective to complete the sentence is 'su'. It means 'his', 'her', or 'your' (formal singular) in English.
Step-by-step explanation:
The correct possessive adjective to complete the sentence is su.
'Su' is the possessive adjective that agrees with 'casa' (house), which is a singular feminine noun. It means 'his', 'her', or 'your' (formal singular) in English. Therefore, the correct sentence is 'Me gusta la casa de Alba; su casa es grande y moderna.'
For example, if we want to say 'I like Maria's house; her house is big and modern' in Spanish, we would say 'Me gusta la casa de Maria; su casa es grande y moderna.'
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