The laboratory technicians had to ---- the microbiological experiment several times before achieving statistically consistent data.
Answer and explanation
Correct answer: B. carry out
- Step 1: Scientific experiments, surveys, and research investigations are 'carried out'.
- Step 2: 'Carry out' means to perform or conduct a task or experiment.
Answer
carry out.
Why not the others: 'Turn down' means to reject or reduce volume; 'Look after' means to take care of; 'Give off' means to emit gas or odor.
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