Answer:
1. Laptop Running Windows
2. Desktop Computer Running a Mac OS
3. Desktop Computer Running Windows
Step-by-step explanation:
1. Sera does not have a big budget, but she needs a portable computer. Laptop Running Windows
2. Arturo is worried about viruses and has a high budget. Portability is not an issue. Desktop Computer Running a Mac OS
3. Kazuma wants a computer that does not cost too much and is easy to upgrade. Desktop Computer Running Windows
I hope this helps.<3
Have a nice day.<3