The correct answer is: A. 1-4
Spirogyra is a genus of green algae that is found in freshwater habitats. It is a filamentous algae, meaning that it is made up of long, thin cells that are arranged in a chain. The cells of Spirogyra contain a large number of chloroplasts, which are the organelles that are responsible for photosynthesis. The number of chloroplasts in a cell of Spirogyra can vary depending on the species, but it is typically between 1 and 4.
Option B is incorrect because it states that the number of chloroplasts in a cell of Spirogyra is 1-8. This is not always the case, as the number of chloroplasts can vary depending on the species.
Option C is incorrect because it states that the number of chloroplasts in a cell of Spirogyra is 1-14. This is not always the case, as the number of chloroplasts can vary depending on the species.
Option D is incorrect because it states that the number of chloroplasts in a cell of Spirogyra is 2-8. This is not always the case, as the number of chloroplasts can vary depending on the species.