Question

which is a type of self - exam that should be conducted at home to potentially identify early signs of disease?
cavity
cancer
testicular
glaucoma

Explanation:

Testicular self - exams can be done at home. Men can check for lumps, swelling, or other changes in the testicles which may be early signs related to testicular health issues. Cavity is related to teeth (usually checked by a dentist), cancer (in general) requires more comprehensive medical tests (not just a simple home self - exam in a general sense as presented here), and glaucoma is usually diagnosed through eye - specific tests by an eye doctor (like measuring intraocular pressure, visual field tests etc., not a simple home self - exam).

Answer:

testicular