Question

13. Which of the following abbreviations requires the use of a period or periods? A. Fe (the chemical symbol for iron) B. am (the abbreviation for before noon) C. YWCA (an organization for young women) D. PA (the abbreviation for Pennsylvania)

Answer 1

Which of the following abbreviations requires the use of a period or periods?

A. am (the abbreviation for before noon)

B. PA (the abbreviation for Pennsylvania)

C. Fe (the chemical symbol for iron)

D. YWCA (an organization for young women

Step-by-step explanation:

Penn Foster

Answer 2

The correct answer is B. It is the only one that should be written with periods - a.m., meaning - ante meridiem, or 'before noon'. The other examples are written without a period.