A colon, when placed between two numbers indicates a ratio.
For example, 1:1 is saying that something is at a 1-to-1 ratio.
This would be better in the Math section though, but I'm happy to answer.
Try looking on dictionary.com or a thesaurus.
Answer:
Conflict in a story creates and drives the plot forward. Therefore the 1st should be right.
Explanation:
Hello is this a writing assignment