Read the following statements.

I. Explicit lexical learning strategies enhance noticing and create opportunities for recycling, two factors that allow learners to internalize newly met vocabulary effectively provided that they consider both form and meaning.

II. For less proficient learners, a lack of low-frequency vocabulary in a vicious cycle with limited lexical knowledge discouraging reading contributes to vocabulary growth.

III. Several linguistic and textual obstacles can lead to partially or fully incorrect inferences and attributes which students can unlearn rather easily.

IV. The English language learners, especially less proficient ones, face difficulties of increasing vocabulary size through the inference of unknown word meaning. I.

Mark the alternative in which every item included is CORRECT.