In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Q: Violets usually have _ sepals at the base and have five petals.

A: five
****
Q: Plazas have _ accumulations of rubbish but are covered with even layers of mud bricks and plaster.

A: no
****
Q: Squirrels otherwise appear to be safe and pose almost _ risk of transmitting rabies .

A:
zero
****