It would be A, the other choices simply doesn't fit with what you are trying to provide to the reader. You want to pull them in
B. Captain
The subject is Jonathan and captain is what jonathan is
I think the best choice is the last one: <span>d. appropriate length.
. Length is also determined by the purpose of the work and the context in which it will appear. (for examples, some newspaper articles have per-specified length). </span>
The word that often introduces a subordinate adjective clause is the word A. who.
For example:
That is the guy <u>who bought me a soda.
</u><u />The other options would never introduce an adjective clause, but they would an adverb one.
Answer:
ask question and answer the ones u know
