Given the fact "a greenhouse is used to protect plants by keeping them warm", what is the answer to the question or completion "A man grows flowers in the winter using his greenhouse. The flowers blossom there, despite the cold, freezing weather and lack of sunshine, because"

OPTIONS:
- they are regularly chilled
- they are given salt
- they are carefully protected
- they are told to
they are carefully protected
Med tanke på att "ett växthus används för att skydda växter genom att hålla dem varma", vad är svaret på frågan eller slutförandet "En man odlar blommor på vintern med hjälp av sitt växthus. Blommorna blommar där, trots det kalla, kalla vädret och bristen på solsken, eftersom "alternativ: - de är regelbundet kylda - de får salt - de är noggrant skyddade - de uppmanas att
Given that "a greenhouse is used to protect plants by keeping them warm", what is the answer to the question or completion "A man grows flowers in winter using his greenhouse. The flowers bloom there, despite the cold, cold weather and lack of sunshine, because "options: - they are regularly chilled - they get salt - they are carefully protected - they are urged to
de är noggrant skyddade
they are carefully protected