Which of the following conditions can cause secondary CNV?

Secondary choroidal neovascularization (CNV) can indeed be caused by choroidal rupture, which occurs when there is a break in the choroidal tissue, often due to trauma or as a consequence of various eye diseases. This rupture can lead to the formation of new blood vessels, ultimately resulting in CNV.

While hypertensive retinopathy and diabetic retinopathy can lead to various complications in the retina and potentially contribute to vascular changes, they are primarily known for their own disease mechanisms and aren't direct causes of secondary CNV in the same way that a choroidal rupture is.

Choroidal ruptures create a conducive environment for neovascularization because the integrity of the choroidal tissue is compromised, allowing for an abnormal proliferation of new blood vessels. Since the question specifically focuses on potential causes of secondary CNV, choroidal rupture stands out as the primary and direct contributor.