Final answer:
The two prepositional phrases are 'on kids' and 'to their stress levels,' with 'on' and 'to' being the prepositions and 'kids' and 'their stress levels' as their respective objects.
Step-by-step explanation:
The question asks about identifying the two prepositional phrases in the sentence: 'the parents’ group gathered to discuss how sports may be placing unnecessary pressure on kids and contributing to their stress levels.' A prepositional phrase includes a preposition and the object it governs, and it can function as an adverbial or adjective phrase to provide additional information about time, location, or manner.
Upon examination of the sentence, we can identify the following prepositional phrases:
1. 'on kids' which serves to show the relationship and the impact of the pressure that is being discussed.
2. 'to their stress levels' which shows the contribution to something. Here, 'to' is used as the preposition, and 'their stress levels' is the object of the preposition, together indicating what sports are contributing to.
Therefore, the two prepositional phrases in this sentence are 'on kids' and 'to their stress levels'.