Which of the following is the best example of deductive reasoning? a. blake needs a new book to read. he asks friends for suggestions and goes to the bookstore to make his choice. b. corinne sees that all the girls at school have short hair. corinne tells her mother she needs to cut her hair. c. jeff wants to get a new job. he looks online for job postings and makes a list of the jobs that he is qualified for. d. to get a degree, students must have 120 credits. anna has 130 credits. therefore, anna must have a degree. deductive reasoning, also deductive logic or logical deduction or, informally, "top-down" logic, is the process of reasoning from one or more statements (premises) to reach a logically certain conclusion. it differs from inductive reasoning or abductive reasoning.,