Identify the tone of the passage.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. Speculative.
Line to Refer: “They’ve made a series of astonishing discoveries that, once again, tempt scientists to believe that Mars harbours life—or did so in the past.”
“...75 per cent of the scientists said they thought life once existed there...”
The tone is "Speculative" i.e. based on guesswork or possibility, not confirmed facts. It matches the passage perfectly, as it discusses the possibility of life on Mars.
Hence, the chosen option will be correct.