Help me please…………………

If i have enough money, buy a car. a, will b, shall

Read this excerpt from leah missbach day's foreword to wheels of change.bicycles have long played a role in my life. as a young woman, i rode one year-round before i had a car. but it was later in adulthood that the bicycle became more than a source of transportation for me. the bicycle actually began to truly shape the way i saw the world.what is the author's purpose for including this in the foreword?

Choose the matching analogy plague: contagious a: confident: trustworthy b: loyal: companion c: nature: random d gather: congregate