1. Hinderance is spelt wrong.
2. Incidently is spelt wrong
3. Environment is spelt correctly
4. Sophmore is spelt wrong
5. Mathmatics is spelt wrong
6. Miniature is spelt correctly.
The answer to the question above would be that the words that are properly spelled are the following ones: Environment and miniature.
All the other words are spelled incorrectly. Hinderance should be "hindrance", incidently should be "incidentally", sophmore should be "sophomore" and, finally, mathmatics should be "mathematics".