The correct answer is A. Search.
Scour is a verb that means to clean or remove something by rubbing or scraping it with a rough surface. It can also mean to search or examine something thoroughly.
Search is a verb that means to look for something carefully or thoroughly. It can also mean to try to find information about something.
Flow is a verb that means to move continuously in a stream or current. It can also mean to move or change gradually.
Raise is a verb that means to lift or move something to a higher position. It can also mean to increase the amount of something.
Push is a verb that means to use force to move something away from you. It can also mean to try to persuade someone to do something.
In the context of the question, the word “scour” is most closely related to the word “search.” This is because both words mean to look for something carefully or thoroughly. For example, you might scour the internet for information about a product you are interested in buying, or you might scour your backyard for lost toys.
The other words in the list do not have the same meaning as “search.” For example, “flow” means to move continuously in a stream or current, “raise” means to lift or move something to a higher position, and “push” means to use force to move something away from you.