Answer and Explanation:
<u>What functions as a subject is not really the relative clause, but the relative pronoun - "that".</u> Relative pronouns can act as subjects or objects in the clause they introduce. Let's compare:
1. I am the only person who saw Erica.
2. I am the only person who Erica saw and recognized.
Notice that in sentence 1, "who" is the subject of the clause "saw Erica". However, in sentence 2, "who" is the object. The subject of the verb "saw" now is "Erica".
<u>The same happens in the clause "that was hurt before". The relative pronoun "that" - which is substituting the noun "ankle" - is the subject of the clause "was hurt before". Therefore, we can say its noun function is the subject.</u>
Swimming is an action verb because you can do it. Fast is not an action verb it is an adjective.
The participle in this sentence is "sweating". It's a participle of the verb " to sweat" and it's a present participle: which we know because it ends with an -ing (past participles end with "-ed).
I think it's C.
Because, lemme put commas on each sentences....
(1) If you ask me, Jerry is a tennis whiz.
<span>(2) When she is worried, Lucille eats a lot. </span>
<span>(3) Jerry loves tennis, he plays everyday. </span>
<span>(4) Lucille bought a new tennis racket and brought it home. << Where should I put it?
</span>
So, (4) is automatically out of question. (1) and (2) seems okay with comma, but (3) is a little bit weird. (3) supposed to have 'and' in the middle, but it's not there. So, you can put semicolon there, to separate the words.