Select the option that expresses the given sentence in passive voice.Mr. Johnson teaches us mathematics.

The given sentence is in the Active Voice and Simple Present Tense ("teaches").Active voice structure: $\text{Subject (Mr. Johnson)}+{\text{Verb}}_1{\text{/Verb}}_5\text{ (teaches)}+\text{Indirect Object (us)}+\text{Direct Object (mathematics)}$.When transforming a simple present tense sentence into the passive voice, the structural rule is: $\text{New Subject (Mathematics)}+\text{is/am/are}+{\text{Verb}}_3\text{ (taught)}+\text{to/for}+\text{Object}+\text{by}+\text{New Object (Mr. Johnson)}$.Let's evaluate the options:Option A uses "was taught" (Simple Past), which is incorrect.Option B uses "is being taught" (Present Continuous), which is incorrect.Option C uses "is taught" (Simple Present Passive), which perfectly matches the required rules.Option D uses "will be taught" (Simple Future), which is incorrect.