"Abundant" means existing in large quantities or having more than enough. Its closest synonym is "plenty."
"Diligent" describes someone who is focused, persistent, and works carefully, making "hardworking" the best choice.
"Imply" means to indicate or suggest something without saying it outright.
"Cautious" means being careful or alert to avoid risks, making "careful" the correct synonym.
"Provoke" means to cause a reaction, often by annoying or irritating someone.