In what trimester does these happen

a sac called a placenta forms around the embryo and is connected to the embryo with an umbilical cord.
a) first
b) second
c) third

Needed accessing information google/setting/year of information google scholar 1. identify the question or topic. valid: is the resource truthful? reliable: is the resource trustworthy and dependable? 1. is the information current up to 3 years? 1. is the purpose of the source stated clearly? 2. is the same information found in more than 1 resource? 2. is the resource sponsored by an institution or organization? is the resource a .gov, .edu, or .org? 3. is there enough information about the topic? think about who? , what? , when? , where? , how? , and why? . 3. is the author’s background trustworthy? 4. are the facts in the article cited or referenced? 4. is the article based on facts and free of bias? 2. resource y/n 3. valid (why? ) y/n 4. reliable (why) 1. 1. 2. 2. 3. 3. 4. 4. 1. 1. 2. 2. 3. 3. 4. 4. 1. 1. 2. 2. 3. 3. 4. 4. 1. 1. 2. 2. 3. 3. 4. 4. 5. reflection what factors did you use to determine the validity of your sources? (what was most important and guided your decision to determine validity? ) what factors did you use to determine the reliability of your sources? what was the most important and guided your decision to determine reliability? what form of media resources (internet, publications, music, advertisements, video, etc.) do you think were the most valid and reliable for your question? support your answer. what was your best source? support your answer.