Respuesta :
The investor that made a short-term investment in this scenario is;
Sofia
Short term investments are defined as financial investments that can easily be converted to cash within a maximum of 5 years. Some famous examples of short-term investments are money markets, government bonds, Treasury bills, high-yield savings accounts e.t.c.
These short term investments have low interest rates but then the advantage is that they are highly liquid as one can quickly withdraw his/her money if urgently required.
Looking at the options of the new investments made by Thomas, sofia and aaron, the person that made a short term investment is; Sofia because she bought a treasury bond that matures in 9 months.
Read more about short term investments at; https://brainly.com/question/3729664