What does sunbeams were golden threads piercing the clouds mean?

Which of the following is an essential element of a strong informative/explanatory text? a. it expresses an opinion on a topic. b. it has a clear organizational structure. c. it uses text features, such as headings. d. it includes graphic elements, such as images.

Missus a. having been sent b. going to send c. having sent d. sending

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