Question

all but one event would occur during meiosis i. that is
a homologous chromosomes pair up.
b sister chromatids divide, resulting in haploid cells.
c nuclear membrane form around newly separated chromosomes.
d homologous chromosomes are separated with sister chromatids in place.

Explanation:

In meiosis I, homologous chromosomes pair up (synapsis), homologous chromosomes separate with sister - chromatids still attached, and a nuclear membrane can form around newly separated chromosomes at telophase I. Sister chromatids divide to result in haploid cells during meiosis II, not meiosis I.

Answer:

B. sister chromatids divide, resulting in haploid cells.