In the following sentence, there is an underlined word and one gap. From the list of words lettered A to D…

Analyze the question

The underlined word is not visible in the text you sent. From the sentence, it is almost certainly "complicated" ("Algebra seems complicated, but with practice it becomes ____"). We need a word that:

1. Is opposite in meaning to "complicated", and
2. Fits the gap grammatically and logically.

Explain the concept

This is an antonym-plus-context question. Two tests must both be passed. The word must be a true opposite, and it must make sense in the sentence. The word "but" signals a contrast: algebra seems complicated, but it becomes the opposite.

Solution

• A. solved: This is not an opposite of "complicated". It describes a result, not a level of difficulty. Also, "algebra becomes solved" is awkward.
• B. simple: This is the direct antonym of "complicated" (complicated ↔ simple). "With practice it becomes simple" reads naturally.
• C. accessible: This means easy to reach or understand. It is close, but it is not the most direct opposite of "complicated". It is more a synonym of "approachable".
• D. achievable: This means possible to accomplish. It relates to goals, not to complexity.

Answer: B (simple)

Tip: In "opposite meaning + fill the gap" questions, first find the direct antonym pair (complicated/simple, hard/easy). Then check that it fits the sentence. Also watch for contrast words like "but", "although" and "however", which point to an opposite idea.

If your original question had a different underlined word, send it and I will recheck.