In the article “Effective English Reading Strategies:...

In the article “Effective English Reading Strategies: English Language Learners’ Perceptions” (2019), the author Waheeb S. Albiladi says that: 

“Reading in English within a second language (ESL) context has received much attention as researchers and second language educators have sought the most effective and beneficial ways to develop language learners’ reading skills. For many educators (Horwitz, 2008; Krashen, 2007; Nation, 2008; Singhal, 2001), reading is the bridge that allows English language learners to acquire and develop other language skills including speaking, writing, and vocabulary acquisition. [...] Barrot (2016) mentioned that research surrounding teaching English reading focuses on the type of text or materials used in English classes and the strategies that ESL teachers utilize to facilitate teaching and learning of English reading”.

Analyze the following statements about the excerpt above:

I. Reading is the only mandatory skill needed for acquiring other language abilities. II. Research on teaching of English reading often focuses on materials and teaching strategies. III. Reading skills are less significant than speaking skills in second language learning.

Which ones are correct?