Answer:
The scale factor from Figure A to Figure B is 1/2
Step-by-step explanation:
<u><em>The correct question is</em></u>
Figure B is a scaled copy of Figure A.
What is the scale factor from Figure A to Figure B?
The picture in the attached figure
we know that
A dilation is a non rigid transformation that produce similar figures
If two figures are similar, then the ratio of its corresponding sides is proportional
In this problem Figure A and Figure B are similar
so
To find out the scale factor, determine the ratio of its vertical corresponding sides
The vertical side of figure A is 4 units
The corresponding side in figure B is 2 units

The scale factor is less than 1
so
The dilation is a reduction
therefore
The scale factor from Figure A to Figure B is 1/2