Answer: D)add up the storage requirements for the operating system and all of the software applications currently installed.
Step-by-step explanation:Hard disk drive (HDD) is the secondary hardware device for the storage of the data permanently. It can be used for storing data along with the videos, documents, pictures etc.
Hard drive can store data in a large amount as compared to any other drive and having varying capacity of data storage according to the data.The minimum space of the hard drive to be embedded in a system is calculated on the basis of the storage of files of operating system,software programs and other data.
So, option (D) is the correct option.