c. during winter. They can't be dormant while blooming or when there's rain or in the spring
Plants generally go dormant in response to adverse growing conditions, such as when trees or perennial garden plants go dormant during the cold winter months, or when turfgrass goes dormant in a lawn during a period of intense heat or drought. ;
Plants often enter dormancy during unfavorable conditions such as extreme cold or drought. This process usually occurs in winter, when temperatures drop and sunlight is limited. Therefore, the correct answer is option c. during winter.
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