Ambiguous Reference Pronoun

Mr. Castro is here with his father. Would you like me to introduce you to HIM? (This is vague. Who could him refer to in this sentence?)

• Mr. Castro
• father
• me
• Mr. Castro and father

Miss Havisham lives with Estella in HER mansion. (This is vague. Who could her refer to in this sentence?)

• Miss Havisham
• Estella
• Miss Havisham and Estella
• mansion

The musicians asked me to help put instruments back on the buses, but I can't find THEM. (This is vague. Who could them refer to in this sentence?)

• musicians, instruments, and buses
• musicians
• musicians and instruments
• instruments and buses

The Mosleys were in charge, but the Smiths brought food too. I thought THEIR food was delicious.(This is vague. Who could their refer to in this sentence?)

• Mosleys and Smiths
• Mosleys and food
• Smiths and picnic
• delicious and food

Before Sally puts fondant flowers on wedding cakes, she sprinkles THEM with sugar. (This is vague. Who could them refer to in this sentence?)

• Sally and flowers
• Sally and flowers and cakes
• flowers and cakes

They explained to the audience that a muskrat looks like a small beaver with a rat-like tail. (Is this OK, or does it have a vague pronoun reference?)

• OK
• vague pronoun reference

The fans booed and jeered at the referee because he had called it unfairly. (Is this OK, or does it have a vague pronoun reference?)

• OK
• vague pronoun reference

Which contains a vague pronoun reference?

• As Joe was talking to Sam, Sam started to cry.
• As Joe was talking to Sam, he started to cry.

Which contains a vague pronoun reference?

• Dad yelled at Rick, but he was just being silly.
•  Dad was just being silly when he yelled at Rick.

Which contains a vague pronoun reference?

• In California, you can go surfing.
• In California, people can go surfing