D answer is gloomy,meaning to express depression
The prepositional phrase in this sentence is c. "to your sentence structure", because it is postmodifying an infinitive phrase (to bring complexity), which has the same value, in this case, as a noun phrase. Besides it is composed by a preposition (to) and a noun phrase (your sentence structure).
Option a. is a verb phrase as well as option b. In the same way, letter d. is not a prepositional phrase as it is an adjective phrase used in the comparative form.
Answer:
once upon a time a group of children were wanted to explore a house which was on the top of a hill. they had reached to the top of the hill. after some time they heard some groaning sound which was coming from the house. so they had entered into the house slowly they had opened the door and shocked that a young boy was tied to the chair. and he was moving to go out from that house. by seeing this the children had released the boy. and discovered that the house was the hide out for a terrorist and kidnapped that boy. so the children had informed the police.about that house when they returned to the home they had awarded by the people for their bravary ness. ""title was a group children and the mystery of a house"" at last the boy said to the children "Thanks, for saving my life"
