When joining several pieces of bias binding together to make one long strip, the pieces should be joined

A. straight across the width of the strip.

B. on a straight thread.

C. in a gently curving seam.

D. straight along the length of the strip.

I believe the answer is B. on a straight thread

In straight thread, the seal is usually accomplished via use of 0-ring, seal, or bonded washer and This allows the threads to interfere and seal off, which is really perfect if you want to join several pieces of bias binding together to make one long strip