Sunflowers require soil and plenty of sunlight and water to grow and thrive.

If asking true or false then true, if asking you to reword it then it is worded "sunflowers need sun and water to grow" if asking you to say the inverse say "if sunflowers do not have sun and water, they will not grow and thrive". I'm not sure what your asking though.

Nimbostratus is the correct answer.
explanation: nimbostratus clouds are the type of clouds that are mostly likely present on gray, rainy day. these clouds produce continuous rain, snow and there is no thundering or lightening either.