Which sentence shows the correct placement of quotation marks?
a. “In the future,” the speaker stated, space travel will be possible for everyone, not just astronauts.”
b. “In the future,” the speaker stated, “space travel will be possible for everyone, not just astronauts.”
c. In the future, the speaker stated, “space travel will be possible for everyone, not just astronauts.”
d. “In the future, the speaker stated, space travel will be possible for everyone, not just astronauts.”