Which of the following excerpts from emma by jane austen is in active voice?

a. "as she sat one morning, looking forward to exactly such a close of the present day, a note was brought from mrs.
goddard "

b. " emma felt the glory of having schemed successfully."

c. "they would be estimated very differently by others as well as

d. "he was invited to contribute any really good enigmas, charades, or conundrums that he might "