Which of the following sentences are correctly punctuated? check all that apply. a) when she returned to work after maternity leave, she learned that her office had been relocated to the second floor. b) submit your expense report proposal before october 15, 2008. maurice listened to the team’s proposals and then he promptly turned them down. c) not one employee was willing to sit at the desk, that had belonged to the man who turned out to be a serial killer. d) all participants must sign in register their vehicles and report to their assigned locations before 7: 30 a. m.

B and D.

Explanation:  Punctuation is a branch or feature of spelling, which allows to express exclusively in the written language a spectrum of rhythmic and melodic nuances characteristic of the spoken language, through the use of a systematized set of syntactic signs.

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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.