Texas has a relatively high poverty rate but low enrollment in medicaid. this suggests that:

a. texans are very healthy
b. healthcare in texas is cheap
c. the poverty rate is not calculated correctly
d. texas has relatively stringent eligibility requirements for medicaid

d. Texas has relatively stringent eligibility requirements for Medicaid

Explanation:

Currently, Texas is among the states that have not expanded their medicaid to reach more vulnerable citizens. In Texas, adults without dependents or disability are not qualified for medicaid no matter how small their income is. This stringent regulations could be responsible for low enrollment rate.

using the scientific method.

south, because if you took a map you would see texas is directly in the middle of east and west, but it is also downwards towards mexico, therefore it is south