which is the most credible source to use when writing about the latest developments in robotics?\n a book…

which is the most credible source to use when writing about the latest developments in robotics?\n a book with the title robots in the future with the copyright date 1962\n an interview with a sixth - grade student about his robotics kit\n a textbook written last year by a professor of engineering\n a post from a blog called “adventures in robotics”
Answer
Brief Explanations:
A book from 1962 is outdated for latest developments. An interview with a sixth - grade student may lack in - depth knowledge. A blog post may not have peer - review. A textbook written last year by an engineering professor is likely to have up - to - date and reliable information due to the author's expertise and the recent publication date.
Answer:
a textbook written last year by a professor of engineering