To be safe, you should carry ___ spare fuses.

As many as needed for your circuit types.. Section 2.1: Carry spare fuses for each type needed.

To be safe, you should carry ___ spare fuses.

ANSWER BREAKDOWN
  • A. Incorrect. "1" is not correct. Carry spare fuses for each type needed.
  • B. Correct. Carry spare fuses for each type needed.
  • C. Incorrect. "0" is not correct. Carry spare fuses for each type needed.
  • D. Incorrect. "10" is not correct. Carry spare fuses for each type needed.