Question

At the top of each note card, the researcher writes _____.

author's name
general heading
nothing
the page number

Answer 1

Answer to your question is General heading. By writting heading it's easier to find the note card you want.It makes easier to organize. Author's name can be written in the begging of research, it's not essential to write at the top of each note card. the page number is alwyas written at the bottom of the page. So answer to your question is At the top of each note card, the researcher writes general heading

Answer 2

At the top of each note card, the researcher writes the general heading. A researchers note card contains (in order): upperleft top: the general heading , upper right top is the source where you found the information. next is he paraphrased contents and then at the bottom right is the page number where you found the topic on.