Prepositions are words we use if we want to show a spatial relationship, where something is located, etc. Having this in mind, the correct answer is at and between. There are no other prepositions in this sentence: however and or are conjunctions.
Answer:
It is implicit because it is directly stated in the paragraph
The team used in " a team of horses" means that there are different group of horses. Each group of horses comprises a whole team of horses. This is how the <span>word team is used in "the speaker's family a team of horses the speaker's football friends". A group or team is used interchangeably.</span>
