Answer:
whose
where
who
Step-by-step explanation:
A relative clause is a clause that modifies a noun or pronoun in the main clause of a sentence. In the first sentence, the relative clause is modifying the noun "man," and it is indicating that the man has a daughter who won the tournament. The relative pronoun "whose" is used to indicate possession or ownership, so it is the correct relative pronoun to use in this sentence.
In the second sentence, the relative clause is modifying the noun "restaurant," and it is indicating that the restaurant is the location where the speaker went last weekend. The relative pronoun "where" is used to indicate a location or place, so it is the correct relative pronoun to use in this sentence.
In the third sentence, the relative clause is modifying the noun "lady," and it is indicating that the lady is the person who spoke at the academic forum. The relative pronoun "who" is used to refer to a person, so it is the correct relative pronoun to use in this sentence.