The answer is both open and close but it can only be one so i would go with d. open
Answer - Well there are many benefits but heres are the mainly benefited engineer crops.
Helps resistant against the bacterial or contagious disease that can kill crops.
Helps create the reproduction/production of bigger (size) crops.
Helps create modified crops for more nutritive values.
These are the few main reasons but theres more.
Survival of species and natural selection 500 dollars
The cell produces proteins by process called translation. Proteins the moved to endoplasmic and later on they are releases by exocytosis.