Answer:
Based on the quotations provided, the correct inference can be made that Ernesto's childhood was tense at times.
In the first quotation, it is mentioned that you never knew when someone was watching. This suggests a sense of constant surveillance or pressure, which can contribute to a tense environment.
The second quotation mentions that people on the street talked in low tones, and only certain individuals raised their voices. This implies a need for caution and a subdued atmosphere, which can add to the tension.
The third quotation states that the train station was deserted with soldiers walking back and forth. This indicates a sense of unease or insecurity, which can further contribute to a tense atmosphere.
Finally, the fourth quotation mentions staying in a hotel for only one day and becoming acquainted with the bathtub. This suggests a lack of stability and familiarity, which can also contribute to a tense experience.
Overall, these quotations provide evidence that Ernesto's childhood was tense at times.