Which sentence best describes frustration
a. when you can't achieve your goal because you are not trying hard
b. when you can't achieve your goal because you had a poor plan
c. when you achieve your goals despite certain events
d. when you can't achieve your goal due to events beyond your contro

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.

the answer to your question is,

d. when a child was born.

-mabel < 3