Which of the following is one of the five hypotheses proposed by Krashen?

The Natural Order Hypothesis is one of the five hypotheses proposed by Stephen Krashen in his theory of second language acquisition. This hypothesis suggests that language learners acquire the grammatical structures of a language in a predictable sequence, regardless of the order in which they are taught. Krashen argues that this natural order of acquisition is influenced by the complexity of the language structures and that learners tend to grasp simpler structures before moving on to more complex ones.

Understanding the Natural Order Hypothesis helps educators design effective curriculum and instruction that aligns with how learners naturally acquire language. For instance, focusing on simpler grammatical forms first can facilitate a more effective learning process as students become ready to tackle more complex structures.

The other options provided—Contextual Learning, Cognitive Development, and Behavioural Patterns—relate to different theories or aspects of education and learning but do not specifically refer to the hypotheses set forth by Krashen regarding language acquisition.