Nathan notices his computer system is slowing down when he tries to copy documents to it. he also gets a prompt that warns him that his system is running low on storage space. which hardware device should he consider upgrading in order to increase the system's storage space? a. ram b. hard drive c. processor d. optical drive

The Hard Drive. he could also purchase a flash drive or something else of the sort for portable storage  

more than 1 person for sure

abu bakr, was a senior companion and—through his daughter aisha—a father-in-law of the islamic prophet muhammad. abu bakr became the first openly declared muslim outside muhammad's family. abu bakr served as a trusted advisor to muhammad.