Quiero trabajar de secretaria administrativa:
A) pero no tengo mucha experiencia.
B) pero no tengo secretaria.
C) para ayudar a los animales
D) sino como asistente social.

The answer is A) pero no tengo mucha experiencia.

Explanation:

I want to work as an administrative secretary:

A) but I don't have much experience.

It's what you say when you go to a job interview but you need more experience time.

B) but I don't have a secretary.

There is no point being a secretary to have a secretary.

C) to help animals.

A secretary does not help animals.

D) but as a social worker.

There's no point in applying for a job if you're going to want another.