Which source is least likely to be accurate

a. a handbook of statistics from the united nations
b. a press release from a company
c. an academic article
d. a scientific study

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

the exclusive possession or control of the supply or trade in a commodity or service.