Adel al-Jubeir, the Saudi minister of state for foreign affairs, told reporters that he did not hear Mr. Biden tell the crown prince that he was responsible, describing instead a brief and less contentious exchange that focused on human rights without dwelling on the killing.
To solve thus question, one of the most important concept is Parallelism.
1. responsible, describing instead a brief and less contentious exchange that focused on human rights without dwelling on the killing. Correct answer
2. responsible and describing instead a brief and less contentious exchange that focused on human rights without dwelling on the killing ->
[b]If you see more closely the sentence and is not following parallelism. Further, And means additional points but it is not giving any additional point. It is only continuing the sentence. So discarded.[/b]
3. responsible, describing instead a brief and less contentious exchange that focused on human rights were without dwelling on the killing -> See
that focused on human rights were. Use of were makes the sentence akward.
4. responsible, describing instead a brief and less contentious exchange that focused on human rights without dwelling and killing -> See
dwelling and killing which makes the sentence improper. It should be dwelling on the killing.
5. responsible and describing instead a brief and less contentious exchange that focused on human rights were without dwelling on the killing. ->
If you see more closely the sentence and is not following parallelism. Further, And means additional points but it is not giving any additional point. It is only continuing the sentence. So discarded.