The detector to identify infections with the virus or not isa.pregnancy urine testb.HIV testc.The diabetic blood testd.Microscopes

The question seems to be asking about the method used to identify infections with a virus. None of the options provided (a. pregnancy urine test, b. HIV test, c. diabetic blood test, d. microscopes) are universally applicable to all viruses.

However, if we're talking about a specific virus, such as HIV, then the HIV test (option b) would be the correct answer. This test detects the presence of HIV antibodies in the blood.

Microscopes (option d) can also be used in some cases to identify viruses, but this is not the primary method of detection and requires a high level of magnification and expertise.

Pregnancy urine tests (option a) and diabetic blood tests (option c) are not used to detect viral infections. They are used to detect pregnancy hormones and blood sugar levels, respectively.

So, without more specific information about which virus the question is referring to, it's difficult to give a definitive answer.