Fact 1: Fungi have special structures for penetrating a host.

Fact 2: Host tissue penetration occurs to the point of vascular connectivity.

Given the two facts above, answer the question "What can be part of invading a host?" with the following options: 
- It helps them survive
 - Something that causes allergies
 - Movement of an air mass
 - energy of moving objects
 - vascular conncectivity
 - harmful substances
 - Leptospirosis
 - competing for resources


 

     vascular conncectivity    