Recently, zika virus has been in the news. treatment of it is of particular concern. why?

Zika virus has been known to cause harm to the human population. This zika virus is mainly spread by the bite of mosquitoes. The symptoms of zika virus are headache, muscle pain and itching.

The treatment of zika virus is important since no vaccine has been developed against the virus. The best way to prevent the zika virus is to control the mosquito population and protects themselves from the mosquito bite.

i think its the first one

answer; both surfaces of the membrane are nonpermeable