Early in the Spring, a Gardener's Bare Plot Was Weed

Multiple Choice

Early in the spring, a gardener's bare plot was weed free. Three days after turning over the soil, she was amazed to see dozens of tiny weed seedlings. Which answer gives the most likely reason these weeds germinated?

A) Their large seeds needed soil disturbance to germinate.
B) Their small seeds needed light to germinate.
C) Their large seeds were physically scarified by her shovel or rake.
D) Their small seeds needed exposure to higher levels of oxygen to germinate.