Which of these is not a credible source for research

What do you think is the greatest invention that you use today? explain in 4 sentences

Which of the following steps is not part of analyzing a poem? a. explore the poet's background. b. explore the theme. c. examine form and structure. d. examine language patterns.

How does this excerpt develop the central idea that espionage during the civil war was often carried out by untrained citizens? it enhances the reader’s understanding by explaining why training was unnecessary. it changes the reader’s perception of what information a spy was able to obtain. it explains an ordinary person’s motivation for conducting espionage against the enemy. it adds moral complexity to espionage, due to the use of secret and dangerous methods.