Question

In significant figure, the precision of measurement which depends on the...A... of the measurements instrument
Here, A refers to
1.certainty
2. uncertainty
3. least count
4. significant digit
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Answer 1

$\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the Error Analysis in Instruments.

We clearly know that, every Physical Instrument gives precise and Correct Measurement , when it have a significant LEAST COUNT, thus we can say that, LC is the important factor of a instrument to get precision of measurement.

Hence, Option 3.) is the Answer.

==> Least Count.