{{i}}quEstions 11 - 13 ArE BAsED on thE Following tAlk. you now hAvE 15 sEConDs to rEAD quEstions 11 - 13.{{/i}}

thE spEAkEr sAys it is nECEssAry to tAlk ABout hAy BECAusEA．hE is giving lECturEs on CAttlE rAising.
B．hE is giving lECturEs on mEAt proDuCtion.
C．hE is giving lECturEs on FArm AnimAls.
D．hE is giving lECturEs on grAssEs.