Which of the following is a quantitative observation?

please help:

A) A yellow solid formed.
B) None of the listed answers are correct
C) The liquid looked yellow.
D) Carbon dioxide was produced.
E) All of the listed answers are correct
F) The object had a mass of 2.3 grams.

Question

Which of the following is a quantitative observation? 

please help:

A) A yellow solid formed.
B) None of the listed answers are correct
C) The liquid looked yellow.
D) Carbon dioxide was produced.
E) All of the listed answers are correct
F) The object had a mass of 2.3 grams.

aaronq · Answer

the word "quantitative" indicates that a measurement occurred and so it would be numerical - this is in contrast to "qualitative" which is based on a physical observation.

rushwr · Answer

When it says quantitative it should have information about a quantity So I'll go with the last answer. . And I agree with u @aaronq