Final answer:
The syntax error is in option A, where 'white' should be enclosed in quotation marks. It should be Rect(50, 50, 100, 300, fill="white").
Step-by-step explanation:
The question asks to identify which of the following is a syntax error:
- Rect(50, 50, 100, 300, fill=white)
- Circle(300, 300, 75, borderWidth=5)
A syntax error in programming refers to a mistake in the code that prevents the program from being interpreted or compiled correctly. Upon examining the given options, it becomes apparent that the syntax error is in A. Rect(50, 50, 100, 300, fill=white) because the color 'white' should be specified as a string, therefore it should be enclosed in quotation marks, like 'white' or "white". The correct syntax should be: Rect(50, 50, 100, 300, fill="white").
Without quotation marks, the interpreter or compiler will likely attempt to treat 'white' as a variable name rather than a string value for the color, causing a syntax error. On the other hand, option B seems to be syntactically correct since it does not contain obvious mistakes that would prevent a program from parsing it successfully.