Answer:
A personal idea must be identified with a Citation. Thus, the correct option for this question is A.
What is Citation?
The Citation may be defined as a type of document that significantly commends or applaud someone publicly for something the person has concluded. In a more simple sense, the citation is a reference to a particular source.
A Citation is a type of quotation which includes a reference to the book, research papers, etc. This type of document generally recognized the personal idea of the individuals in the field and the work he/she is associated with.
In-text citations must be delivered in parentheses. A letter from the author must be represented in acknowledgment.
Therefore, a personal idea must be identified with a Citation. Thus, the correct option for this question is A.
Step-by-step explanation: