Which galaxy classification is not part of the hubble sequence? a: lenticular b: elliptical c: circular d: spiral

Which of the following was not a factor that contributed to world war i? a. american neutrality b. nationalism in the balkans c. the system of overlapping military alliances among different european nations d. the rise of germany as an imperial power

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english

Mrs. walter’s husband died in 2016. she has not remarried and has maintained a home for herself and her dependent son, whom she can claim as a dependent. in the summer of 2018, the son was killed in an automobile accident. what is mrs. walter’s filing status for 2018