Respuesta :
The active sentence is
→ C. Many people contributed to the invention of the telephone.
This sentence uses simple past tense
✐ formula past simple
(+) S + Verb 2 + O/C
(-) S + did + not + Verb 1 + O/C
(?) Did + S + Verb 1 + O/C?
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Subject : English
Keywords : Active Voice, Past simple
Also read the similar question https://brainly.com/question/9909961
In active voice, the subject of a sentence or statement is responsible for performing the action denoted by the verb. The "Many people" in the sentence are the ones who contributed to the invention of the telephone. This action took place in a past context. In the other options we read sentences in which the subjects are affected by external agents.