hi !
I would answer n° 4
Yucatan = Chichen Itza, Uxmal, Tulum y Palenque
Chichen Itza, Uxmal, Tulum and Palenque are architectural master pieces from the Maya period and are situated in Yucatan , in Mexico south east near Mexico Gulf. Palenque is more in the Chiapas but very close to Yucatan
hope I helped