¡ Hola !
<em>read and choose the option with the correct form of the verb</em>
<em> </em><em>ANSWER = C</em>
<em>Es importante que</em> tú tienes cuidado cuando estás caminando y usando tú teléphono. <em>(subjunctive)</em>
<em>Es necessario que</em> mires por donde caminas. <em>(subjunctive)</em>
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explanation
"es importante que" <em>(subjective opinion)</em> & "es necessario que"<em> (impersonal expression) </em>need the subjonctive tense.
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hope this helps ☺☺☺
The answer would have to be será. The other answers would be incorrect because serás is plural, serán would be for taking about a specific person or thing and seremos would not be valid in this context.
Answer:
para aprender español :v. .