Final answer:
The best practice for typing variables such as ?subject, ?predicate, and ?object in computer programming is to use camelCase.
Step-by-step explanation:
The common best practice for typing variables such as ?subject, ?predicate, and ?object in computer programming is to use camelCase. CamelCase is a naming convention where each word in the variable is capitalized except for the first word, which starts with a lowercase letter. This helps improve readability and consistency in code.
For example, instead of typing ?subject, you would write ?subject. The same applies to ?predicate and ?object – they would become ?predicate and ?object respectively.