The function of the infinitive phrase in the sentence <em>To win a marathon is my goal </em>is object of the verb.
It is definitely an object, and it would follow a verb if it were a normal ordering of words in the sentence (My goal is to win a marathon), and since it is not preceded by a preposition, it cannot be object of the preposition, but of a verb.
Answer:
I think A sounds the most descriptive.
It was very wet on monday because it rained alot
"I hate dull days" lucy shouted out in class when the teacher asked them about if they like bright or dull days.
the maths test was extremely easy.
James party was very exiting.
uncle tim gave me a really small present for christmas which was a pencil.
yesterday i got a new stationary set.
"my house is not there, it's here" called jake.
"i am getting annoyed now!" emily screamed when emma (her younger sister) was annoying her.
hope this helps
:D