Respuesta :
The triple alliance was an agreement between Germany, Italy, and Hungary, which formed on May 20, 1882.
The correct answer is:
Option D. to protect itself from attacks by Russia
Triple alliance can be explained as:
1. The treaty was signed in 1882 between three countries. These three countries agreed to support each other from the attacks of France or Russia.
2. Germany wanted to increase its power and preserve the country's peace. This alliance caused fear in many countries and all three countries became more powerful.
Thus, the correct answer is Option D.
To know more about Triple Alliance, refer to the following link:
https://brainly.com/question/2385695