Explanation: Code-switching is the practice of alternating between two or more languages or language varieties within a single conversation or utterance. Daniela switches from responding in English ('blue') to expressing a need in Spanish ('Me duele la cabeza') and then back to English ('Si'). Interlanguage refers to the learner's developing L2 system. Circumlocution is using roundabout language to express something when the precise word is unknown.

Explanation: Sociolinguistic competence involves understanding and using language appropriately in different social and cultural contexts, which matches the description given in the question. Strategic competence is about using communication strategies to overcome difficulties. Grammatical competence relates to knowledge of sentence structure, and structural competence is not a standard term used in this context.

Explanation: The correct word order for this question should be "Can you tell me what time it is?" The student incorrectly inverted the subject and verb within the embedded question clause. The error is not specifically about relative pronouns, subject-verb agreement, or modals.

Explanation: The difficulty arises from the fact that English spelling is not always phonetically consistent. Words like "cough," "through," and "laugh" demonstrate inconsistencies in how letter combinations map to sounds, making them challenging for learners. False cognates are words that look similar in two languages but have different meanings. Sight words are high-frequency words often memorized by sight. Inflectional morphemes are grammatical endings like -ed or -s.

Explanation: The speaker says "some student" which sounds like "some th-student" or has difficulty clearly producing the initial 's' sound in 'student' or 'something'. Focusing on initial S would help clarify this sound. Initial H, final T, and final N are not the primary sounds needing focus in this excerpt.