Final answer:
The phrase that best completes the sentence is 'parce qu'ils sont effrayants et jouent sur la tension psychologique' which means 'because they are scary and play on psychological tension' in English.
Step-by-step explanation:
The correct answer is:
parce qu'ils sont effrayants et jouent sur la tension psychologique.
This translates to "because they are scary and play on psychological tension." In the given sentence, the phrase that best completes it should describe why the person does not like thrillers. The correct option mentions that thrillers are scary and play on psychological tension, which aligns with the genre. The other options do not accurately describe thrillers. Thus, the correct answer is 'parce qu'ils sont effrayants et jouent sur la tension psychologique'.
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