Need help with question

option a

Step-by-step explanation:

in figure 1: 2n-1 so 2×1=2-1=1 so in figure 1 there is 1 block

in figure 2: 2-n-1= (2×2)-1=4-1=3 so there are 3 blocks this pattern continues

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.