The Mayan pyramid of Kukulkan is more than just ____________ edifice; this imposing structure was built to create a chirping echo whenever people clap their hands on the staircase. This echo sounds just like the chirp of the Quetzal, a bird which is sacred in the Mayan culture. A. a venerable B. a humble C. a beguiling D. an august E. a specious F. a prosaic