Answer :

When discussing shutter speeds in photography, a slower shutter speed results in a longer exposure time, which can make moving subjects appear blurred because the camera's sensor captures more motion over that longer period.

To determine which shutter speed is the slowest, we should compare the given options:
- 1/2
- 1/250
- 1/500
- 1/1000

Shutter speed is typically expressed as fractions of a second. The larger the fraction, the slower the shutter speed. Hence, we need to identify the largest value among these fractions.

- 1/2 equals 0.5 seconds
- 1/250 equals 0.004 seconds
- 1/500 equals 0.002 seconds
- 1/1000 equals 0.001 seconds

Comparing these values numerically, we see that:

0.5 (1/2) is greater than 0.004 (1/250), 0.002 (1/500), and 0.001 (1/1000).

Therefore, the slowest shutter speed, which will most likely blur movement due to the longer exposure time, is:

O a. 1/2