How do i get my enemies to target a random or nearby player in an array

This is my current script, i want the enemy to pick a random or nearby player from an array and move towards them but i can't figure out how to do it.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Linq;
4.  
5. public class EnemyMovement : MonoBehaviour
6. {
7.  
8.     Transform player;               // Reference to the player's position.
9.     PlayerHealth playerHealth;      // Reference to the player's health.
10.     EnemyHealth enemyHealth;        // Reference to this enemy's health.
11.     NavMeshAgent nav;               // Reference to the nav mesh agent.
12.     Animator anim;                    // Reference to the animator
13.     float MaxDist = 20;
14.     float MinDist = 1;
15.  
16.     void Start ()
17.     {
18.         // Set up the references.
19.  
20.         player = GameObject.FindGameObjectWithTag ("Player").transform;
21.         playerHealth = player.GetComponent <PlayerHealth> ();
22.         enemyHealth = GetComponent <EnemyHealth> ();
23.         nav = GetComponent <NavMeshAgent> ();
24.         anim = GetComponent <Animator> ();
25.     }
26.        
27.     void FixedUpdate ()
28.     {
29.        
30.         // If the enemy and the player have health left...
31.  
32.         if(enemyHealth.currentHealth > 0 && playerHealth.currentHealth > 0)
33.         {
34.             // ... set the destination of the nav mesh agent to the player.
35.             if (Vector3.Distance (transform.position, player.position) >= MinDist) {
36.                
37.                 nav.SetDestination (player.position);
38.  
39.                 anim.SetBool ("Run", true);
40.             }
41.         }
42.     }
43. }

 

You're getting your logic all mixed up, do one thing at a time by starting with the tutorial https://unity3d.com/learn/tutorials/topics/navigation/navmesh-agen