Which sentence has a grammatically correct parallel structure?

a. i want to find a job that will provide an adequate context for my skill, and to earn enough money for my family.

b. i want to find a job, an adequate context for my skill, and to earn enough money for my family.

c. i want to find a job that will provide an adequate context for my skill and enough money for my family.

d. i want to find a job, to provide an adequate context for my skill and to earn enough money for my family.