The SMOG (Simplified Measure of Gobbledygook) Readability Formula Estimates the Reading

Multiple Choice

The SMOG (Simplified Measure of Gobbledygook) readability formula estimates the reading grade level required by a person if he or she is to fully understand the written material assessed. The SMOG formula is defined as SMOG reading grade level $= \sqrt { w } + 3$ where w is the number of words that have three or more syllables that should appear in a sample of 30 sentences. A writer of children's books has decided to write a book that can be fully understood by children at the 5th-grade level. What is the maximum number of words with three or more syllables that should appear in any sample of 30 sentences of the book?

A) 6
B) 8
C) 4
D) 5
E) 7