Looks like a plant cell, so…
A- Chloroplast
B- Large Central Vacuole
C- Mitochondrion
D- Cellulose Cell Wall
E- Cell membrane
F- Nucleus (I assume)
G- hard to see, but looks like endoplasmic reticulum, don’t know if it’s smooth or rough, hard to determine
H- Ribosome
I- Golgi body/ complex