Answer:
A. alliteration
Step-by-step explanation:
- Alliteration is a figure of speech having words beginning with the same letter or sound at the beginning of adjacent or closely connected words.
- Here, the phrase is "ten trillion".
- Both the words have the beginning letter "t".
- Hence, the figure of speech will be alliteration.
Hope you could understand.
If you have any query, feel free to ask.