Answer and Explanation:
Dear Sir or Madam,
This is to draw your attention to the unsanitary conditions of Street . . ., in . . . neighborhood. Over the past few days, piles of garbage have been accumulating outside my house, on number . . ., as well as other homes around the neighborhood.
Even though sweepers frequently come to the neighborhood and effectively clean the streets, the piles they gather are not being duly collected. Residents of the area are concerned that the garbage may end up attracting bugs, rats, and even larger animals, which may lead to the spread of diseases.
Your prompt action is kindly requested to have the garbage collected and the area inspected for pests.
Yours sincerely,
. . .
I believe the correct answer is "She should prepare a presentation for a general audience by providing some standard information and by defining concepts without oversimplifying.
A sentence is in the passive voice, on the other hand, when the subject is acted on by the verb. The passive voice is always constructed with a conjugated form of to be plus the verb's past participle. Doing this usually generates a preposition as well.