Which of These Is Thought to Be a Causative Factor

question 31

Multiple Choice

Which of these is thought to be a causative factor of spina bifida?

• A)maternal rubella infection
• B)fetal prematurity
• C)maternal folic-acid deficiency
• D)fetal infection

---

Definitions:

Contrary

In logic, refers to propositions that cannot both be true simultaneously, though they can both be false.

Proposition

A proclamation that reflects a judgment or viewpoint.

Singular Proposition

A statement or claim about a specific individual or distinct object.

Contrary

Refers to statements or propositions that cannot both be true at the same time, but can both be false.