In the following excerpt, how would "knocking on wood" be a beneficial superstition?

"People are far too likely to summarily condemn superstitions without first considering what caused them to come to exist in the first place or what their social significance is$.$ Think about that the next time you boast about your brand$-$new car and then you knock on wood. The lesson here may not be about the wood preventing a car accident; it may be a cultural lesson about bragging."

Select an answer and submit. For keyboard navigation, use the up$/$down arrow keys to select an answer.

a It can prevent accidents from happening.

b It has a significant historical value and practical value.

c It teaches people the community value of refraining from bragging.

d It helps people to be more careful and more considerate drivers.