Final answer:
Programming languages share 'syntax' with natural languages, referring to the rules that define the structure of written code, analogous to grammar and spelling in natural languages. This aspect is crucial for ensuring that a computer can understand and execute the written instructions.
Step-by-step explanation:
The question 'Programming languages have __________, just like natural languages.' is looking for what characteristic programming languages share with natural languages. The correct answer is syntax, which refers to the set of rules that defines the combinations of symbols that are considered to be a correctly structured document or fragment in that language. Just as natural languages have grammar and spelling rules, programming languages have a syntax that must be followed for the code to be understood and executed by a computer.
Natural languages may be riddled with rules of grammar and spelling that we learn effortlessly during early stages of life. Similarly, programming languages require learning specific syntax and semantics. These define how instructions are written and understood by the computer. Syntax and semantics in programming languages are critical, as they determine the correct structure and meaning of the code we write.