Answer: A) Applying a grammar rule to cases where it does not apply (e.g., "goed").
Explanation for this question is being written.
Answer: A) Adding-ed to a verb to talk about the past.
Answer: A) Age of the learner.
Answer: A) True
Answer: A) I plan on sleeping a lot.
Answer: D) Met
Answer: C) One tense as their all-purpose future form (going to).