Please tell fast plz

Pl i need the answer now ! which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard

Jason works as an accountant in a department store. he needs to keep a daily record of all the invoices issued by the store. which file naming convention would him the most? a)give the file a unique name b)name the file in yymmdd format c)use descriptive name while naming the files d)use capital letters while naming the file

The first screen you see when you open word2016 what is called?