For this question, choose the option nearest in meaning to the word or phrase in italics. The scientist made an astonishing discovery in the laboratory.

Step 1: Analyze the question You are asked to find the word closest in meaning to the italicized word, astonishing, in the sentence: "The scientist made an astonishing discovery in the laboratory."

Step 2: Explain the concept Astonishing is an adjective meaning extremely surprising or impressive. It describes something so unexpected or remarkable that it leaves you amazed. This is a synonym question, so look for the option that carries the same idea of great surprise.

Step 3: Check each option

• A. common: This means usual or widespread. It is the opposite of astonishing, because something astonishing is not usual.
• B. amazing: This means causing great surprise or wonder. It matches astonishing very closely.
• C. expected: This means anticipated. Something astonishing is unexpected, so this is also an opposite.
• D. ordinary: This means normal or unremarkable. It is another opposite.

Step 4: Answer The correct option is B. amazing.

Tip: In synonym questions, first spot the opposites. Here A, C and D all suggest "normal" or "predictable", so they can be removed quickly, leaving only B. Also learn word groups: astonishing, amazing, surprising, staggering, astounding all belong together.