Taaaa76 okay so when a virus enters a cell, the cell will release interferons as a warning signal for other neighbouring cells. Basically, it's warning its neighbours that a virus is in the body, and therefore A wouldn't be correct. Complement proteins will be released to try and recruit more leukocytes to the site of infection, so B wouldn't be correct. Production of lymphocytes, aka T and B cells will increase as antigen-presenting cells active the humoral and cell-mediated responses, so D is also incorrect. Apoptosis however is controlled cell death. This is used by the body to get rid of body cells that are damaged, dying, potentially cancerous, etc. Cells infected by viruses undergo lysis, at least according to VCAA (biology is a lot more complicated), not controlled cell death initiated by the body itself. Therefore, I reckon C is probably correct (I might be wrong though).
