Estelle has 30 years of experience in your field that has answered your questions given you advice and help you make contact she is your

a). mentor

Multiple-choices

a). mentor b). notary c).  referral d). coach

Explanation:

A mentor is an expert and experienced person who offers to guide a less experienced individual. The purpose of mentorship is to give the inexperienced person exposure and on the job training so that they can excel as the mentor.

The mentor helps build the mentee's confidence and models positive behavior. They fast-track their mentee's career by giving advice, useful tips,  introducing them to important contacts. A mentor should be reliable, show commitment, and believe in their mentee.

the u.s. census bureau produces data on the population and economy nationwide. it can you to analyze the kind of people living in your neighborhood. it does not show you the market of people willing to buy your product or an existing market for your product. that will require more market research. the census bureau only gives you an insight to the demographics in your area.

you have to put the parentheses like this:

in fact, you have to perform the operation inside parentheses first, and then proceed in order: