Questão número 640309

In text 9A2CCC, the word “their” (l.15) refers to

• A. ‘observations and knowledge’ (l.15).
• B. “positive effects” (l.12).
• C. “children’s language skills” (l. 12 and 13).
• D. “Liu et al.” (l.13).
• E. ‘learners’(l.14).