Answer : The correct option is, (A)
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule. The valence electrons are represented by 'dot'.
The given element is, Arsenic
As we know that the arsenic is the element that belongs to the group 15 and the total number of valence electrons present in arsenic are, 5
The option A is correct because this structure shows that arsenic bonds chemically with the other by 5 covalent bonds. That means firstly, one-one electrons are filled singly then pairing takes palace. While the other options are incorrect options.
Hence, the correct option is, (A)