A plot in a story refers to the events which are connected by cause and effort.
Whereas, subplots exist within the main plot as a side story. It never overpowers the main plot but is connected with the main plot. Events that take place outside the main story are described in subplots. Therefore, the purpose of the subplot is to strengthen the main story line.
Therefore, one reason why subplots are used in novels is to develop the novel's theme in more depth.
Explanation:
1)Don't put all your eggs in one basket
meaning:What you're doing is too risky
2)Every cloud has a silver lining
meaning:Good things come after bad things
3)Get a taste of your own medicine
meaning:Get treated the way you've been treating others (negative)
4)Give someone the cold shoulder
meaning:Ignore someone
