What is deductive reasoning?

HELP ME ASAP

Decuctive reasoning: It's based on rules, definitons, and/or facts, it uses the rules, definitons, and/or facts to make statements about specific cases, it draws valid conclusions, and uses 2 main laws ( the law of detachment and the law of syllogism.)

Explanation:

A:  all others countries need to know that we will fight them all at any cost to maintain our liberty

"Let every nation know, whether it wishes us well or ill, that we shall pay any price, any burden, meet any hardship, support any friend, oppose any foe, to assure the survival and the success of liberty"

In those lines/ sentences it talks about doing anything for liberty and letter A fits that perfectly

I don't speak much english so I hoped that helped :)