Answer: Option (A) is the correct answer.
Step-by-step explanation:
A crystalline solid will be electrically neutral if atoms present in the molecule have opposite charges.
For example, in a NaCl molecule sodium has +1 charge and chlorine has -1 charge. Therefore, this molecule is neutral due to the presence of same number of opposite charges.
Thus, we can conclude that a crystalline solid that is electrically neutral MOST likely has ionic bonds.