Which markup segment uses the output element to display the combined value of two input...

Option C is the only segment that correctly combines three required pieces: two contributing < input > controls, a named < output > control, and executable form-level logic that assigns a calculated value into that output. The HTML < output > element is specifically designed as a container for the result of a calculation or user action, and its for attribute identifies the controls that contributed to the calculation by using a space-separated list of element identifiers or associated names in the form workflow. MDN’s reference demonstrates this exact pattern: two input values are added, and the result is assigned to an < output > element whenever input changes. Option A renders literal text inside < output > but does not update it. Option B has no < output > element at all, so it cannot satisfy the requirement. Option D declares an output but lacks an oninput handler or script assignment, so the displayed value never changes. References/topics: HTML5 forms, < output > element, for attribute, form input events, calculated form results.

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