Name atleast two diseases caused by viruses.

The correct option is B Common cold and Measles

• Acquired immunodeficiency syndrome (AIDS) is a chronic disease caused by the human immunodeficiency virus (HIV).
• Many types of viruses can cause a common cold, rhinoviruses are the most common cause.
• Typhoid is a bacterial disease caused by the bacteria Salmonella typhi.
• Bacterial dysentery is caused by infection with bacteria from Shigella, Campylobacter, Salmonella, or Entamoeba histolytica.
  

So the correct answer is option A.