When treating chlamydia both partners need to take the antibiotic at the same time. The correct option among all the options given in the question is option "D". Chlamydia is a common type of sexually transmitted disease and can be treated very easily. It often has no clear symptoms and it can be stooped from spreading by the use of condoms.
A person can get HIV from a blood transfusion. The correct option among all the options given in the question is option "A". The full form of HIV is Human Immunodeficiency Virus. It is actually a lentivirus that causes HIV.
Sets of transcription factor proteins buying a specific DNA sequences in or near a gene and promote or repress its transcription into RNA. Which i believe its C