C. It allows the poet to create a steady rhythm throughout.
Explanation:
Within that address, Barack Obama is concentrating on two main issues;
- Reduction of the national debt as well as an emphasis on expenditure, especially on schooling. Obama claims that planning for the future of schooling would hold the running smoothly in the years.
- Government expenditure must be recognised by people since it impacts their everyday life, from taxation deducted from their pay packets to both the social welfare of all residents.
They are singular because mathematic and mathematics are the same thing, as well as physics; It's not like there are physic and physics.
