The answer is B. Spanner.
A spade, shovel, rake, and pick-axe are all tools used for gardening or construction. A spanner is a tool used to turn nuts and bolts.
A spade is a long-handled tool with a flat, rectangular blade used for digging. A shovel is a long-handled tool with a curved blade used for moving loose material, such as dirt, sand, or snow. A rake is a long-handled tool with a row of teeth used for leveling soil, spreading mulch, or gathering leaves. A pick-axe is a long-handled tool with a pointed head used for breaking up hard ground or stone.