Question

which type of data should be collected to answer the question \how heavy are poodle dogs?\ univariate a bivariate

Explanation:

Univariate data deals with one variable. Here, the variable is the weight of poodle dogs. Bivariate data involves two variables. Since we are only interested in the weight (one variable) of poodle dogs, univariate data should be collected.

Answer:

A. Univariate