Answer:
1st blank: B. Allied powers
2nd blank: C. Germany
3rd blank: C. Ottoman power
Step-by-step explanation:
The allied invasion crippled the central powersduring the offencive as even the USA had joined the allies. The attack severely affected the power of the ottomans in the middle east as well.
This weakened the already struggling Germany even more and forced ottomans to surrender and eventually Germans signed an armistice with the allies.