Match the word to its meaning, or the meaning to its word. A strong vocabulary is the single biggest driver of 11+ English and verbal reasoning scores, and it only grows one word at a time. Every answer comes with the word used in a sentence.
Almost every part of the 11+ leans on vocabulary: comprehension passages use ambitious words, verbal reasoning asks for synonyms and odd-ones-out, and writing is marked up for precise word choices. Children who read widely meet these words in the wild; this tool tops that up deliberately.
The example sentence with each answer is the bit worth reading aloud: words stick when they're met in context.