PCI and AGP slots have been replaced with PCI-E slot (PCI-Express). There are different types of PCI-E buses:
PCI Express 1x (250 [500] * MB/s)
PCI Express 2x (500 [1000] * MB/s)
PCI Express 4x (1000 [2000] * MB/s)
PCI Express 8x (2000 [4000] * MB/s)
PCI Express 16x (4000 [8000] * MB/s)
<span>PCI Express 32x (8000 [16000] * MB/s)
I hope that's what you meant :)</span>
I may be wrong, BUT here is what i think
b) line graph
d) pie graph
Dropbox
Mozilla Firefox, Google Chrome
Gmail, Mozilla Thunderbird
CDburnerXP
Putty, Netflix,
Paint.net, Filezilla
The activity that uses a feature of a word processor is the last given answer. Recreating the same document multiple times to print multiple copies. Although some word processors have all the features stated above now a days. Word processors are helpful in composing, editing and printing text documents.