To determine Nigeria's GDP per capita based on the provided data, we can analyze the information from the other countries listed.
- Egypt has a GDP per capita of $3,514.49 with a literacy rate of 73.8%.
- Sudan has a GDP per capita of $2,415.04 with a literacy rate of 75.9%.
- South Africa has a GDP per capita of $5,273.59 with a literacy rate of 94.3%.
We notice that as countries' GDP per capita increases, the literacy rate generally tends to be higher as well. Nigeria's literacy rate is 59.6%, which is lower compared to the countries listed.
When estimating Nigeria's GDP per capita, it is reasonable to consider it would be lower than that of Egypt and South Africa, given its lower literacy rate.
Now looking at the options:
- A. $8,461.54 - too high based on its literacy level.
- B. $2,177.99 - plausible; this is somewhat below Sudan and also lower than Nigeria's literacy might suggest.
- C. $6,100.23 - quite high compared to South Africa and doesn't correlate with the literacy.
- D. $4,233.42 - this is an intermediate value, which may seem reasonable.
Considering these observations, B. $2,177.99 seems the most reasonable estimate, as it is below the GDP of Sudan and reflects a lower economic state that would correspond with Nigeria's literacy rate.
Final conclusion: The most reasonable estimate for Nigeria's GDP per capita is B. $2,177.99.