Antibodies produce proteins that attach to an invading virus. Antibodies attach to an invading virus as a target marker. Antibodies engulf the invading virus as a defense mechanism. Antibodies release enzymes that lyse the invading virus.
Which immune system function is carried out by antibodies?

Options:
- Antibodies produce proteins that attach to an invading virus.
- Antibodies attach to an invading virus as a target marker.
- Antibodies engulf the invading virus as a defense mechanism.
- Antibodies release enzymes that lyse the invading virus.

Antibodies attach to an invading virus as a target marker.