<h2>Right answer: tos</h2>
Usually, when you have a cold (resfriado in spanish) you feel tired, with fever, nasal congestion with sneezing. Also, it is possible that there is a sore throat, headache, <u>cough, </u>among other symptoms.
The spanish word for cough is <u><em>tos</em></u>. So, in this context the correct option is tos and the complete sentence is:
<h2>Ella tiene un resfriado y tiene <u>tos</u></h2>
She has a cold and has a cough