How many scanning lines does each frame of a television picture consist of?

Each frame of a standard television picture consists of 525 scanning lines. This number represents the total horizontal lines that are scanned to create a complete image on the screen. Each line is drawn sequentially, and when all lines are combined, they form the full frame that is visible to viewers.

In traditional interlaced scanning technology, which was commonly used in analog television, the image is built up by scanning these 525 lines in two passes. The first pass covers the odd-numbered lines, and the second pass covers the even-numbered lines, effectively doubling the perception of visual resolution. This method was a fundamental characteristic of the television systems in use during the analog television era.

Other options, like 262, 1050, and 2200 scanning lines, are not representative of the standard television frame structure and do not align with the typical definitions of video lines within either the NTSC or similar formats. Therefore, the choice of 525 scanning lines is indeed the correct and standard answer in television technology.