Answer: A. Store the questioned document in paper bags.
C. Gather exemplars from potential suspects.
Step-by-step explanation:
The question document examination is a field of forensic science which deals with the identification of the author of an unknown document. The handwriting examination is done by a question document expert in which the unknown hand writing sample is compared with the requested handwriting samples from the suspect.
While gathering the questioned documents for analyses care should be taken so as to obtain the sample in good condition so that physical and chemical analysis on it can be done. A document should be placed flat on the paper bag so that it remains free from moisture, dust, dirt and crease free.
On the basis of the above explanation, A. Store the questioned document in paper bags. and C Gather exemplars from potential suspects. are the correct options.