In which sentence is the relative pronoun used as the subject?
AWe followed the guide (who) was leading our dolphin-watching trip.
BThe most beautiful sunsets were the ones (that) light up the sky over the ocean.
CThe part of our vacation in Florida (that) I most enjoyed was our trip to an amusement park.
DThe vacation (that) my family took to Florida ended with a dolphin-watching trip.
words in parenthesis are the words that are underlined in the question
AWe followed the guide (who) was leading our dolphin-watching trip.
BThe most beautiful sunsets were the ones (that) light up the sky over the ocean.
CThe part of our vacation in Florida (that) I most enjoyed was our trip to an amusement park.
DThe vacation (that) my family took to Florida ended with a dolphin-watching trip.