Multi-choice problem: Continue writing the next sentence in this paragraph:

How to make a seedbed
Get to know your climate.
If you have a short vegetable growing season, you should make your seedbed inside a greenhouse. You may need to bring in soil and compost from outside into your greenhouse.

Choose your answer from:
[a]. If the weather is hot at the time of year, get ta get inside your greenhouse to see if your vegetables don't wither or dry out. Humid conditions can severely dehydrate vegetables..
[b]. Choose a location with plenty of light. Seeds require plenty of light, so the seedbed should be placed in an area with the most consistent light and the fewest shadows..
[c]. When this doesn't work for you, you will probably need to change out the soil. This is to be done in areas with loamy or dry soil..
[d]. You may need to kill any diseases that could causes the soil to dry out, like mildew or insect bites. The climate may be saturated due to a drying cycle where there is no rain..
[b].