Answer:
Nancy's private key
Explanation:
She's receiving it. That means Matthew used her public key to encrypt it. She should decrypt it using her private key. Watch this video for clarification :)
Watch The Internet: Encryption & Public Keys on the big video site which cannot be named on brainly :p
It is true because it is really a good practise to save a presentation before printing it
C. Unexpressed resentments can build and hamper work
1. Motherboard (you plug all other components to it)
2. Processor (CPU)
3. Memory (RAM)
4. Graphics card
5. Sound card (sometimes integrated with motherboard)
6. Hard Disk Drive (HDD)
7. Power supply unit