After Twins Are Conceived, Their Chance of Survival Until Birth

question 108

Multiple Choice

After twins are conceived, their chance of survival until birth depends on the prenatal circumstances. An early sonogram might reveal two developing organisms, but later only one embryo continues to grow. This is referred to as the _____ twin phenomenon.

• A) vanishing
• B) disappearing
• C) terminated
• D) missing

---

Definitions:

Systolic Blood Pressure

The pressure in arteries during the contraction of heart muscles, indicated as the higher number in a blood pressure reading.

Italicized Phrase

A portion of text that has been printed in italics to emphasize it, distinguish it, or for stylistic purposes.

Nearest Tenth

Rounding to the closest tenth means adjusting a number to one decimal place.

Decimal

A number that includes a decimal point to represent a fraction of a whole.