Assume NumPy is loaded under the alias np$.$ This code initializes and prints array:

array $=$ np$.$array$([[\text{'}$a$\text{'},\text{'}$a$\text{'}],[\text{'}$b$\text{'},\text{'}$b$\text{'}],[\text{'}$c$\text{'},\text{'}$c$\text{'}]])$

print$($array$)$

$[[\text{'}$a$\text{'}\text{'}$a$\text{'}]$

$[\text{'}$b$\text{'}\text{'}$b$\text{'}]$

$[\text{'}$c$\text{'}\text{'}$c$\text{'}]]$

The following questions modify array and print the result. Fill in the blank to complete the code.

$1)$

array$2=$ np$.\_\_\_\_\_\_($array$,0,\text{'}$z$\text{'},$ axis$=1)$

print$($array$2)$

$[[\text{'}$z$\text{'}\text{'}$a$\text{'}\text{'}$a$\text{'}]$

$[\text{'}$z$\text{'}\text{'}$b$\text{'}\text{'}$b$\text{'}]$

$[\text{'}$z$\text{'}\text{'}$c$\text{'}\text{'}$c$\text{'}]]$

Check

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$2)$

array$2=$ np$.$insert$($array$,0,\text{'}$z$\text{'},\_\_\_\_\_\_)$

print$($array$2)$

$[[\text{'}$z$\text{'}\text{'}$z$\text{'}]$

$[\text{'}$a$\text{'}\text{'}$a$\text{'}]$

$[\text{'}$b$\text{'}\text{'}$b$\text{'}]$

$[\text{'}$c$\text{'}\text{'}$c$\text{'}]]$

Check

Show answer

$3)$

array$2=$ np$.\_\_\_\_\_\_($array$,1,$ axis$=0)$

print$($array$2)$

$[[\text{'}$a$\text{'}\text{'}$a$\text{'}]$

$[\text{'}$c$\text{'}\text{'}$c$\text{'}]]$

Check

Show answer

$4)$

array$2=$ np$.$sort$($array$,\_\_\_\_)$

print$($array$2)$

$[\text{'}$a$\text{'}\text{'}$a$\text{'}\text{'}$b$\text{'}\text{'}$b$\text{'}\text{'}$c$\text{'}\text{'}$c$\text{'}]$