A biology student inoculates a nutrient agar plate with a non-pathogenic bacterial culture. Before incubating the plate at 25∘C25^\circ\text{C}25∘C, they secure the lid with two short pieces of adhesive tape on opposite sides, rather than sealing all the way around the edge.
Why is the Petri dish sealed with just two strips of tape rather than sealing it completely around the circumference?
To allow oxygen to enter, reducing the risk of growing harmful anaerobic pathogens.
To allow moisture to escape, preventing condensation from forming on the lid.
To keep air from entering, which forces the bacteria to undergo aerobic respiration.
To make it easier to open the Petri dish to take samples during incubation.