Fill in the blank: terrorists tend to engage in in advance of a planned attack.
a. planning activities, including surveillance.
b. significant change management activities
c. communications strategies.
d. no acquisition activities

the correct is answer is barack obama i had this answer on usa test prep lave a dont report or your lame

answer; i believe that the correct answer is (tabula rasa);

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.