I will explain why
You need to create a proper thesis statement. The examiner is not interested in what you will be writing, he will be interested to learn of your opinion, as integrated into the discussion topic. Deliver the reasons for your opinion rather than a repeat of the writing instructions. That will not be given any points and will instead, lower the score for that paragraph since the necessary information is incomplete.
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This is a totally unnecessary sentence. Additional points are provided if you start your paragraph with an anchor sentence instead. The anchor sentence references the actual discussion topic that will be extended in consideration within the paragraph.
On the other hand
This is a single opinion essay, not a comparison essay. So you cannot deviate from defending your original opinion. The minute you deviate, your essay will get a failing score because your writer's opinion will become unclear to the examiner.