The most important day I remember in all my life is the one on which my teacher, Anne Mansfield Sullivan, came to me. I am filled with wonder when I consider the immeasurable contrasts between the two lives which it connects. It was the third of March, 1887, three months before I was seven years old. On the afternoon of that eventful day, I stood on the porch, dumb, expectant. I guessed vaguely from my mother's signs and from the hurrying to and fro in the house that something unusual was about to happen, so I went to the door and waited on the steps. I did not know what the future held of marvel or surprise for me.

—The Story of My Life,
Helen Keller

Which details support the central idea of the passage? Check all that apply.

“I was seven years old”
“the immeasurable contrasts between the two lives which it connects”
“I did not know what the future held”
“It was the third of March, 1887”
“I went to the door and waited on the steps”