Question

before working with pipe or steel, always: * a) oil the pipe b) fasten it securely c) bend it first d) measure it twice

Explanation:

When working with pipe or steel, safety and proper handling require securing the material to prevent movement or accidents. Oil - ing (A) isn't a standard pre - work step, bending (C) isn't initial, and measuring twice (D) is for accuracy but not the most critical initial safety step. Fastening securely (B) ensures stability during work.

Answer:

B) Fasten it securely