Which of the Following Statements Is False

question 3

Multiple Choice

Which of the following statements is false?

• A)Every context-sensitive language is recursive.
• B)The set of all languages that are not recursively enumerable is countable.
• C)The family of recursively enumerable languages is closed under union.
• D)The families of recursively enumerable and recursive languages are closed under reversal

---

Definitions:

Lymphocytes

A type of white blood cell that is part of the immune system, involved in protecting the body against infections and diseases.

Histamine

A compound involved in local immune responses, regulating physiological function in the gut and acting as a neurotransmitter.

Heparin

Anticoagulant that prevents platelet agglutination and thus prevents thrombus formation.

Platelet Plug

Accumulation of platelets that stick to each other and to connective tissue; prevents blood loss from damaged blood vessels.