What is the best possessive form of business?

There are two accepted forms for possessive singular nouns ending in s:

Add an apostrophe (') after the existing s at the end of the Word: business'

Add an apostrophe s ('s) after the existing s at the end of the Word: business's

Examples:

Many factors are involved in a business' success.

Many factors are involved in a business's success.

Note: If you are a student, use the form that is preferred by your teacher.