input: OPTIONS:
- microorganisms
- extinct creatures
- remains of prehistoric life
- more abundant
- dying species
- complex living creatures
- members of their own species
- ruined creatures Now, answer this question: Fact 1: Most invertebrates have a more complex nervous system. Fact 2: All complex living creatures, are organized by a nervous system . Given the two facts above, most invertebrates are what?
A:
output: complex living creatures

input: OPTIONS:
- animals
- fish
- blood types
- positive
- immunogens
- cats
- humans
- the skin Now, answer this question: Fact 1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Fact 2: ALL immunogens are antigens. Given the two facts above, what can antibodies (large Y-shaped proteins) recognize and bind to?
A:
output: immunogens

input: OPTIONS:
- Electric devices
- smoking cigarettes
- smoking
- magic
- Good will
- laughter
- Some viruses
- Pesticides Now, answer this question: Fact 1: Some viruses can cause cancer. Fact 2: Some cancers are fatal. Given the two facts above, what can be fatal?
A:
output:
Some viruses