Consider the following statements regarding historical attempts to contact extraterrestrial life: A. Gauss's diagram and similar 19th-century ideas proposed using visible signals to communicate with extraterrestrials. B. The Prix Pierre Guzman excluded Mars because contacting Martians was considered the most challenging task. C. The early 20th century saw radio waves become a more realistic medium for attempting contact with aliens. Which of the statements given above are correct?

Read the following statements about communication with potential extraterrestrial life: A. The Arecibo radio telescope sent a message to a cluster of stars 25,000 light-years away. B. The first physical messages for interstellar travel were engraved on metal plaques. C. The Arecibo message's destination was the planet Venus. Which of the statements given above are correct?

Review these statements about efforts to contact extraterrestrial life: A. Tesla claimed to have received a radio signal from Mars, but most scientists were skeptical. B. The 1962 Yevpatoria transmission to Venus included a message about world peace. C. Carl Sagan and Frank Drake were involved in designing interstellar messages for spacecraft. Which of the statements given above are correct?