(You can try these, these words can represent "system".) Method or methods, organization, routine, strategy, or operation.
I think it is b. Most beautiful, as c and d don't make sense. A is a possibility, but I'm pretty sure it is b. Most beautiful.
I think its either like a sentence for example
him:ill be coming
her:your love, take all of my.....
him: i can't take it no
her:we knew this would come
Answer:The flock of geese was flying home.
The waves in the sea were very high.
Explanation:
