Answer:
The correct option is "can´t"
Step-by-step explanation:
Contractions are used in English language to shorten and combine words. The most common contactions are pronouns or nouns with auxiliary verbs and negative forms.
In this case, we need to combine the verb "can" with the negative "not". The long form is "cannot" and the short and contracted form is "can´t".
The contraction is formed by the verb+ negative contaction (´nt)