The female mosquito is an effective vector for malaria. What makes it an effective vector?

1. it has wings
2. it lays many eggs
3. it makes noticeable noise
4. it mates several times

I wrote the answer as B, but the answer as told on my assessment book says A, (which doesnt make sense). Am i wrong or is the answer provided wrong?

2 answers

I agree with the book. Vectors have to be mobile to spread disease.
thanks