If your relative has not resided (not living) in Canada physically, you shouldn't tick off the option to use your canadian relative to give you extra credit. However if your relative is canadian cityzen, you still can provide CIC his/her passport/cityzen ID card copy. It will not grant you bonus credits but will add positive effect on your case. You should provide information to immigration officer as actual as it is.
If your relative has not resided (not living) in Canada physically, you shouldn't tick off the option to use your canadian relative to give you extra credit. However if your relative is canadian cityzen, you still can provide CIC his/her passport/cityzen ID card copy. It will not grant you bonus credits but will add positive effect on your case. You should provide information to immigration officer as actual as it is.