**Core Concept**
A woman can become pregnant through surrogacy if she has a viable uterus and a healthy reproductive system. However, the maximum number of times a woman can become pregnant for surrogacy is limited by concerns for her health and safety.

**Why the Correct Answer is Right**
The American Society for Reproductive Medicine (ASRM) recommends that a woman should not undergo more than five attempts at surrogacy, considering her age, health, and previous pregnancy history. This limit is imposed to minimize the risks associated with multiple pregnancies, which can lead to complications such as gestational diabetes, hypertension, and placental abruption.

**Why Each Wrong Option is Incorrect**
* **Option A:** There is no scientific basis for limiting the number of pregnancies to 3.
* **Option B:** The ASRM recommends a maximum of 5 attempts at surrogacy, not 7.
* **Option D:** There is no established upper limit for the number of pregnancies a woman can undergo for surrogacy.

**Clinical Pearl / High-Yield Fact**
It's essential for healthcare providers to carefully evaluate each patient's individual circumstances and consider factors such as age, health, and previous pregnancy history before recommending surrogacy.

**Correct Answer:** C. 5.