Convert clock time to total seconds for enzyme rate experiment

Steps:

• Parse display: 00 hours, 01 minute, 33.54 seconds.
• Add minutes to seconds: 1 × 60 = 60 seconds.
• Total: 60 + 33.54 = 93.54 seconds.
• Round to nearest whole second for practical measurement: 94 seconds.

Why C is correct:

• Matches total time in seconds (standard unit for reaction rates), rounded per typical lab precision where sub-second accuracy isn't needed for bubble counts.

Why the others are wrong:

• A: Miscalculates total minutes (93.54 s ÷ 60 ≈ 1.56 min, not 1.34).
• B: Retains mixed units, unsuitable for rate calculations needing single-unit total time.
• D: Incorrect sum (adds ~2 extra seconds, no basis in display).

Final answer: C