Respuesta :
The nonessential element in the sentence "After the rain, the flowers especially the tulips opened their petals." that should be enclosed within parentheses is "especially the tulips".
What is parentheses?
Parentheses is "a word or phrase inserted as an explanation or afterthought into a passage which is grammatically complete without it, in writing usually marked off by brackets, dashes, or commas."
The nonessential element in the sentence "After the rain, the flowers especially the tulips opened their petals." that should be enclosed within parentheses is "especially the tulips" because in the sentence, "especially the tulips" is the afterthought that can be omitted or can be put in brackets without disturbing the sentence's grammar.
To learn more about parentheses here
https://brainly.com/question/11018107
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