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

How to grow grass
Choose cold-weather varieties if you have mild summers.
Cool-season grasses, like fescue, do best in cooler temperatures, but can struggle to survive in hot summers. There are planting maps available online that show color-coded regions for cool, warm, and transition zone grass.

Available options: a). Some grasses, such as fescue, will turn brown and go dormant in order to survive more extreme temperatures. It isn't dead and will usually come back when the temperature is more moderate.; b). Plant culms and planters in wetter conditions. Miniature culms and planters are thriving plants, but they can flare up in dry weather.; c). In the north, neutral grasses range from 4.7-7.4 feet in height. In the west, cool-season grasses range from 6.3-4.2 feet in height.; d). Choose cool season varieties to try next year. This will give you at least a six month window for growth.;
a).