Answer:
https://www.energy.gov/articles/history-light-bulb
Explanation:
A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout a given sample (or multiple samples of different proportion). ... Conversely, a heterogeneous mixture does not have uniform in composition, but proportions of its components vary throughout the sample.
Wikipedia
D. Attending a mosque because you believe it is the right thing to do.