Barter is the exchange and negotiations of a good or goods
this is the closest answer I found. sorry if it's useless
Answer:
all option is correct
Explanation:
Operation order which is denoted as OPORD is a type of detail plan which is given to subordinated to assist them about the any military operation.
The main point of operation order consist of
1) the main function is to order instruction to subordinate in very clear way
2) for any mission accomplishment provide instruction to subordinates
3) asked subordinated for supporting orders.
hence all option is correct
