Solve your doubts and expand your knowledge with IDNLearn.com's extensive Q&A database. Ask your questions and receive comprehensive, trustworthy responses from our dedicated team of experts.

Which of the following are good criteria for selecting Tier 2 words to teach in-depth?
a. Frequency in everyday language.
b. Relevance to the curriculum.
c. Complexity and multiple meanings.
d. Familiarity to students.