Choose the option where both grammar and vocabulary are cor

Choose the option where both grammar and vocabulary are correct:
I. “Many tourists will have been expected to arrive in Spain this year and the next.”
II. “Fossil fuels will have been found lacking in any search conducted by the year 2050.”
III. “Stonehenge will have been visited by at least a thousand visitors by the end of this year.”
IV. “The speed of light will not have been exceeded by any type of craft at any point in the future.”