To answer this question, you need to understand how style rules are presented in CSS (Cascading Style Sheets).
Option A) selector { property: value } - This option is correct because it represents the correct syntax for a style rule in CSS. The selector is the HTML element or class that you want to apply the style to, followed by a set of curly brackets {}. Inside the curly brackets, you define the properties and values that you want to apply to the selected element.
Option B) selector { property= value } - This option is incorrect because it uses the wrong syntax. In CSS, properties and values are separated by a colon (:), not an equals sign (=).
Option C) selector ( property: value ) - This option is incorrect because it uses parentheses instead of curly brackets to define the style rule. Parentheses are not used in CSS for this purpose.
Option D) selector ( property= value ) - This option is incorrect for the same reason as Option C. Parentheses should not be used to define style rules in CSS.
The correct answer is A) selector { property: value }. This option uses the correct syntax for defining style rules in CSS.