A Variable Must Be Defined

question 29

Multiple Choice

A variable must be defined

• A) in every program.
• B) and initialized at the same time.
• C) in order to perform output.
• D) before it can be used.
• E) in all of the above cases.

---

Definitions:

Swordtail Cricket

A type of cricket known for its elongated tail structures, which resemble swords and are used in mating displays and territorial disputes.

Speciation

The process by which populations evolve to become distinct species, often due to genetic isolation from other populations.

Phylogeny

The evolutionary history and the relationships among a species or group of species.

Sympatric Speciation

The evolution of new species from a single ancestral species while inhabiting the same geographical region, without geographic isolation.