Question

In which sentence is the relative pronoun used as the subject?

A) The most beautiful sunsets were the ones that light up the sky over the ocean.
B) We followed the guide who was leading our dolphin-watching trip.
C) The part of our vacation in Florida that I most enjoyed was our trip to an amusement park.
D) The vacation that my family took to Florida ended with a dolphin-watching trip.

Answer 1

B) We followed the guide who was leading...

Explanation:

In this case who is the subject of the relative clause "who was leading our dolphin-watching trip".

The 5 relative pronouns are: that, which, who, whom, whose

I find this question a bit misleading since it asks for
`color(white)("XXX")` the subject in a sentence.
To me this implies we are looking for the subject of a sentence.
who is the subject of a relative clause but not the subject of the sentence.