c). indent and start a new line; double space lines.
Explanation:
The rules for in-text citations in MLA(Modern Language Association) format for long quotations include an "indent with a margin of half-inch, the quote begins from a new line and follows double spacing." The use of quotations marks is strictly prohibited in case of long quotations(comprising of more than four lines). They are located in a free-standing pattern with the indent towards the left side and required to be written using double space to separate it from the original content followed by the author's last name and page number in parenthesis post the last full stop. Thus, <u>option c</u> is the correct answer.
