The correct answer is B) Nirvana, freedom from suffering.
What Buddhists believe they will attain by following the Eightfold Noble Path is Nirvana, freedom from suffering.
We are referring to the instructions left by Budha to end human suffering called the Noble Eightfold Path. The Noble Eightfold Path consisted of the Right Speech, the Right Concentration, the Righ Understanding, the Right Action, the Right Thought, the Right Effort, the Right Livelihood, and the Right Mindfulness.